Once upon a time in the mystical city of Frellum, there lived a unique young wizard named Milo. Milo wasn't like the other wizards. He was curious, adventurous and always up for a challenge.

One day, while peeping through the dusty old books in his grandpa's library, he found something strange. It was a book titled "Arithmagic: When Magic Meets Maths". Intrigued, he opened the book.

The book stated that magic was nothing more than 'Math in disguise'. At first, Milo laughed. How could his amazing magical skills be as mundane as math? But Milo couldn't stop thinking about it.

The next day, while practicing his magic, he tried to experiment with this theory. As he cast the levitation spell on a feather, he realized that it was all about balancing equations, just like in maths.

He observed how adding more force to the spell would make the feather rise higher. Subtracting some would make it fall. The math behind the magic was getting clearer and Milo decided to explore further.

His first big challenge came soon enough. A massive boulder was blocking the entrance to the city. The wizards tried their spells, but none of them could remove it. Milo decided to step up.

Milo examined the boulder. He calculated its weight and the amount of magic force he would need to lift it. It was a tricky multiplication problem, but Milo was up for it.

With determination in his eyes, he cast the spell. He multiplied the weight of the boulder with just the right amount of magic. As a result, the boulder levitated and was moved aside.

The crowd gasped in awe. How could such a young wizard do what even the experienced ones couldn’t? Milo's math magic had worked! He realized that understanding the premise of 'Arithmagic' increased his ability.

A few days later, Milo was faced with another challenge. There was a magical bridge in Frellum that had become too long for anyone to cross. It required shortening by the correct magical measure.

So, Milo examined the bridge and did his calculations. He figured he needed to subtract a certain length from the bridge to make it perfect. Waiting no further, Milo cast his 'shortening' spell.

The bridge shortened to just the right length. The townsfolk were astonished. What was this new math magic that Milo was using? It was clearly more effective than anything they had seen before.

The news of Milo's accomplishments spread throughout Frellum. People came to him with problems that required his 'math magic'. Milo was more than happy to help, all the while learning and improving.

One day, Milo faced his biggest challenge yet. The magical well of Frellum had run dry. It was said that its water could only be replenished by pouring in the exact magical liters.

Milo studied the well and realized that it was a simple addition problem. He just needed to add the right amount of magical liters to get the well functioning again. Excited, Milo set to work.

He calculated the exact amount of water that needed to be added. Then, with a wave of his wand, he conjured up the magical liters. Gently, he poured them into the well.

To everyone’s surprise, the well started overflowing with water. The townspeople couldn't believe it. Milo had done it again! His math magic had proved its efficiency once more.

Milo was fast becoming a hero in Frellum. His unique way of combining magic with math was not only solving problems but also revolutionizing the way people viewed magic.

Inspired by Milo, many young wizards started studying math to improve their magic. They realized that magic and math were not so different after all. Both required logic, precision and creativity.

Days turned into weeks, and weeks into months. Milo continued to help the people of Frellum with his unique ability. His innovative approach inspired change in the city’s magical practices.

Over the years, Milo became a revered figure in Frellum. His blend of magic and math had not only made him an exceptional wizard, but also an extraordinary teacher. He had transformed Frellum into a city of 'Arithmagic'.

Milo's story serves as a reminder that it's okay to be different. It encourages us to approach old practices in new ways. Math and magic were always considered separate, but Milo proved they could coexist beautifully.

Milo's story also highlights the importance of curiosity and the willingness to learn. When Milo stumbled upon the book in his grandpa's library, he didn’t dismiss it. Instead, he opened it and his world changed forever.

Frellum's tale of Milo the Math-magician echoes far and wide, inspiring wizards and muggles alike. His journey from a curious young boy to a revered wizard is a testament to the power of learning, innovation and belief.

As Frellum continues to thrive on the principles of 'Arithmagic', Milo's legacy lives on. A young wizard who dared to see magic in maths and taught an entire city to see it too. And so, in the mystical city of Frellum, the magic continues.