當代愚公!

來源: 2011-08-04 19:43:49 [舊帖] [給我悄悄話] 本文已被閱讀:

$3,000,000 / $20 / 365 (day) / 40 (year) = 10.27 (times/day)

同學們那,這才是當代愚公啊!挖山不止,一日十次,四十年啊!