very simple odds question

hi guys,

i find people here very helpful and appreciate it.

my question is this:

odds of flopping two pairs or three of kind from 27o? (basically any non-straight, offsuit, no paired??)

once i get that number, i can do an approximation for the entire table having flopped something.

i find so much of the odds stuff out there is based on 5 cards coming, but seems like odds to the flop are so much more important in alot of situations.

i'd really appreciate any help. thank you!!