With the Great Sage

Still not noticing the misunderstanding on her maids' faces, Stella excitedly awaited her calculator.

"Here you go. Try it," the Great Sage materialized it out of thin air and everyone gasped at the sight.

"Wow! Amazing. You did it exactly as the one I have drawn," Stella gasped and accepted it with trembling hands.

Stella excitedly tried the calculator that the Great Sage had made. It almost looked like a calculator from her former world, just beautified and slightly larger in size, and it functions with the use of a magic stone. 

She had asked for a calculator with just addition, subtraction, multiplication, and division. That was enough for her in the meantime. But the Great Sage was a prideful overachiever and went ahead and made all the functions as well.