Modulus operator % ? Explain with example ?

Question

im not understanding how the sum procced
.
im not getting correct ans for the code
.
pls help

Answer 1

a(first operand)%b(second operand)=
a/b=c
c*b=d
a-d=result

So a%b=result

Example:

9%5=
9/5=1
5*1=5
9-5=4

So 9%5=4

However, if a is less than b, the answer is a.

For example:

2(answer)%5=2

Answer 2

thnks everyone