The modulo (sometimes called modulus) operation finds the remainder of division of one number by another
Multiplication is the mathematical operation of scaling one number by another
"It appears that you consider modulo to have lower precedence than multiplication and division when in fact it does not"
from question "Operator precedence in C explanation"
"Note that is equivalent to i 10 but much faster since modulo is around 10 times slower than multiplication"
from question "The most efficient way to reverse a number"