$4.5 = Say Hong Kong dollars Four dollars and fifty cents.
$36.9 = Say Hong Kong dollars Thirty six dollars and ninety cents.
$123.4 = Say Hong Kong dollars One hundred twenty three and fouty cents.
如果淨係講就會係甘
1. Four Fifty
2. Thirty Six Ninety
3. One Hunded Twenty Three and Fourty Cents
如果寫既
1. Four Dollars and Fifty cents
2. Thirty Six Dollars and Ninety Cents
3. One Hundred Twenty Three Dollars and Forty Cents