calculater/index.js

This is simple calculater

//addition
exports.addition = function(a, b) {
  return a + b;
};

//subtraction 
exports.subtraction = function(a, b) {
  return a - b;
};

//Division

exports.division = function(a, b) {
  return a / b;
};

//Multiplication 

exports.multiplication = function(a, b) {
  return a * b;
};

//Remainder

exports.remainder = function(a, b) {
	var c=100;
  return a * b / c;
};