simple test library to add and multiply numbers.
$ npm i --save numbers-lib
const numbers = require('numbers-lib');
const res0 = numbers.add(numberOne, numberTwo, numberThree...);
// You can add as many numbers as you want.
// const res0 = numbers.add(401, 402, 403, 404);
// console.log(res0);
const res = numbers.multiply(numberOne, numberTwo, numberThree...);
// You can multiply as many numbers as you want.
// const res1 = numbers.multiply(1, 2, 3, 4);
// console.log(res0);