每年儲蓄 20,000, 年利率有 6%, 於 30 年後 總共有多少 ?

If you use mathematical equation, the equation should be:

$20,000 x (1+0.06)^30 (for interest receive annually),

$20,000 x (1+0.06/365)^(365 x 30) (for interest received daily)

Note: ^ means power, i.e. ^2 = square

Hope this help

Excel已經係一種簡易formlua。
其他要用Financial calculater

以每年計算：
PMT= -20,000
N= 30
I/Y= 6
FV= 1,581,163

以每月計算
PMT= -1,666
N= 30X12
I/Y= 6÷12
FV= 1,674,191

希望幫到您啦！

HK$1,581,163.72
=fv(6%(rate),30( nper ) , -20000 ( PMT ) )