import math

def Mod(p1, p2):
  RetVal = 0
  RetVal = p1
  while RetVal > p2:
    RetVal = RetVal - p2
  return RetVal

Input = 0
Divider = 0
Remainder = 0
Input = input("Please enter number:")
Divider = input("Please enter divider:")
print("Remainder is " + Mod(Input, Divider))