[Malleys]

function calc(sum,percent,dayCount) {
  percent = Number(percent);
  sum = Number(sum);
  dayCount = Number(dayCount);
  
  return sum * Math.pow(1 + percent / 100, dayCount);
}

$("#calcButton").click(function() {
  $('#result').html(calc(
    $('#sum').val(),
    $('#percent').val(),
    $('#day').val()
  ).toFixed(2));
});