¿ How to multiply thousands in JavaScript? : I am learning a bit of javascript, i want to make a a small mathematical operation using thousands. Example: 300,000,000 * 3% = 900,000 This is what you should be displayed to the user, and the user may be able to raise or lower the percentage or value as is as a calculator, and I cannot find how to do to multiply a number with thousands by the percentage in javascript.