Bitcoin "Mining"

function bitcoinMining(minedGold){
    let boughtBitcoin = 0;
    let days = 0;
    let money = 0;
    let firstDay = 0;
    for (let i = 0; i < minedGold.length; i++){
        days++;
        let gold =minedGold[i];
        if (days % 3 === 0){
            gold -= gold * 0.30;
        }
        money += Number((gold * 67.51).toFixed(2));
        while (money >= 11949.16){
            if (firstDay === 0){
                firstDay = days;
            }
            money -= 11949.16;
            boughtBitcoin++;
        }

    }
    console.log(`Bought bitcoins: ${boughtBitcoin}`);
    if (boughtBitcoin >= 1){
        console.log(`Day of the first purchased bitcoin: ${firstDay}`);
    }
    console.log(`Left money: ${money.toFixed(2)} lv.`);

}