function solution(dataArray) {
    let [principalSum, interestRatePercent, periodInMonths, timeSpanInYears] = dataArray;
    let compoundInterest = principalSum * Math.pow(1 + interestRatePercent/(100*( 12/periodInMonths)), 12/periodInMonths * timeSpanInYears);
    console.log(compoundInterest);
}