bitcoin minning2 - fundamentals

function bitcoinMining(params) {

    let minedGoldForDay = Number(params[0]);
    let bitCount = 0;
    let leftMoney = 0;
    let dayOfFirstBitCoin = 0;
    let dayCount = 0;
    let totalMinedGold = 0;
    let isCoin = false;
    let isStop = false;
    for (let i = 0; i < params.length; i++) {

        dayCount++
        minedGoldForDay = Number(params[i])
        if ((i+1) % 3 == 0) {
            minedGoldForDay *= 0.70
        }
        leftMoney += minedGoldForDay * 67.51;
        if (leftMoney>=11949.16) {
            isCoin = true
            bitCount += Math.trunc(leftMoney/11949.16)
            leftMoney= leftMoney%11949.16;
        }
        if(isCoin && !isStop){
            dayOfFirstBitCoin = dayCount;
            isStop = true
        }
    }
    console.log(`Bought bitcoins: ${bitCount}`);
    if (bitCount !== 0) {
        console.log(`Day of the first purchased bitcoin: ${dayOfFirstBitCoin}`);
    }
    console.log(`Left money: ${leftMoney.toFixed(2)} lv.`);
}