siginificant-unsignificant-decimals.js

let scaled = "0.24372638";
let e = parseInt(scaled);
let d3 = padStart((parseInt((scaled * Math.pow(10, 3)).toString()) % Math.pow(10, 3)).toString(), 3);
let i5 = padStart((parseInt((scaled * Math.pow(10, 8)).toString()) % Math.pow(10, 5)).toString(), 5);

let scaled_ = {
  significant: e + '.' + d3, // 0.243
  insignificant: i5          // 72638
};