JSFiddle - React, Tailwind, and code Playground

JavaScript

for(var i=20; i<1000000000; i+=20) {
    var ok = true;
	for(var j=1; j<=20; j++) {
    	if(i%j>0) { ok = false; break; }
    }
    if(!ok) continue;
    console.log(i);
    break;
}