HarmonyOS 单位换算，如何把 “19441” 换成 1.9万 ， 19441000 换算成百万。

function formateTime(time) { 
  const h = parseInt(time / 3600) 
  const minute = parseInt(time / 60 % 60) 
  const second = Math.ceil(time % 60) 
 
  const hours = h < 10 ? '0' + h : h 
  const formatSecond = second > 59 ? 59 : second 
  return `${hours > 0 ? `${hours}:` : ''}${minute < 10 ? '0' + minute : minute}:${formatSecond < 10 ? '0' + formatSecond : formatSecond}` 
} 
formateTime(3601) 
function formatNumber(num) { 
  num = Number(num); 
  if (num == 0 || (num > 0 && num < 10000)) { 
    return num + ''; 
  } else { 
    return (num / 10000).toFixed(2) + '万'; 
  } 
}