code: function convertToTime(number) {
    const hours = Math.floor(number / (60 * 60));
    const mins = Math.floor(number / 60) - hours * 60;
    const secs = (number % 60).toFixed();
    let time = hours > 0 ? `${hours}:` : '';
    time += `${mins < 10 && hours > 0 ? '0' : ''}${mins}:`;
    time += `${secs < 10 ? '0' : ''}${secs}`;
    return time;
  }
docs: /* converts given number of seconds to standard time display format
  http://goo.gl/kEvnKn