figure it out
I can figure it out.
"figure A out" means "understand A". It's a phrase of verb. Sometimes, it is used as following, "I tried to figure out how much sleep I need." Oh the other hand, "figure A in" means "think about A". For example, "Did you figure it in?"
Refs
pv, 13-11-14 22:10, 13-11-14 22:10, Yosei