港元對日元”=]

可參考以下網址, 有即日匯率:
http://hk.finance.yahoo.com/currency

例如現在2009年3月26日上午9:49
港元兌日圓是0.07937

即100円兌7.93港幣 (大概100円=$8港幣)

20000日元=$1600港幣

Hongkong dollar real time exchange rates
how much is hongkong dollar in japanese yen

http://hkd.exchangerates24.com/currency-converter/jpy/

Assuming HKD to USD is 7.8 to 1
Assuming USD to Yen is 96 to 1

Then 20000 Yen is 20000 / 96 USD = 208.33 USD
208.33 USD is 208.33 X 7.8 HKD = 1625 HKD

Or, you can try the following website for an up-today value for all currencies:
http://www.xe.com/ucc/
20,000.00 JPY = 1,615.93 HKD

2009-03-21 21:47:39 補充：
USD to Yen is 1 to 96. Sorry for the confusion.