const englishWords = (needToKnowCnt) => {
let days = 1;
let learned = 5;
const dalyProgress = 2;
const engWorldsTotal = 500000;
if (!needToKnowCnt || needToKnowCnt < 1) return 0
while (learned < needToKnowCnt && learned < engWorldsTotal) {
learned = learned + dalyProgress;
days++;
}
return days
}