convert-time.ts

const SECONDS = 1000
const MINUTES = 60 * SECONDS
const HOURS = 60 * MINUTES
const DAYS = 24 * HOURS

function convertTime(duration: number) {
  const [days, daysReminder] = integerDivide(duration, DAYS)
  const [hours, hoursReminder] = integerDivide(daysReminder, HOURS)
  const [minutes, minutesReminder] = integerDivide(hoursReminder, MINUTES)
  const [seconds, milliseconds] = integerDivide(minutesReminder, SECONDS)
  return { days, hours, minutes, seconds, milliseconds }
}

function integerDivide(numerator: number, denominator: number) {
  const quotient = Math.floor(numerator / denominator)
  const remainder = numerator % denominator
  return [quotient, remainder]
}

console.log(convertTime(206 * MINUTES))