If you invested NT $ 100 per day, or NT $ 3,000 per month, in one of those instruments with a 15 % return, how much would you have after 20 years?
再算算看，每天存下一百元、每月定期定額三千元，投資到上述平均報酬率百分之十五的理財工具中，二十年後會變出多少錢？