I've seen some examples on the Internet where people say, "make money for doing". I know that the proper way of saying this is "make money doing" or, "make money by doing". But since I've seen the "for doing" being used quite frequently, I wanted to make sure what this informal or colloquial expression meant.
"I make money for buying drugs."
Can be taken as,
"I make money for the purpose of buying drugs."
"I make money (by) buying drugs."
I'd love everyone's opinions.