How to use DecimalNumberBehaviorType?

[jyunglai]

This might be a simple question. I'm trying to figure out how to change the behavior of the Money class. Usually with NSDecimalNumber you would create a handler and apply the behavior. I seen to be having a hard time doing so with this class. Of course, I'm probably doing something wrong.

Example:
let cost:Money = 200.00
let num = 3
let each = cost / 3

If I want to round down "each", how should I do so?

Thanks!