closures-example.js

let variable = 37
function multiplyBySomeNumber(number) {
  return function(innerNumber) {
     return innerNumber * number
  }
}
// equivalent to multiplyBySomeNumber = number => innerNumber => number * innerNumber
const multiplyByFive = multiplyBySomeNumber(5)
let variableTimesFive = multiplyByFive(variable)
console.log(variableTimesFive) // 185