to figure out

This is very common and used a lot.
UPDATED: SEPT 20
to figure out

  • to study something and understand it
EXAMPLES:

  1. I just updated to Windows 10 and I am still trying to figure it out.

  2. Did you figure out how you will sell your car by next weekend?

  3. Can you figure out where she is from in the States by her accent?

  4. What are you doing?

    I'm trying to figure out how to assemble this model airplane.

    Well, when you figure it out, you can help me with my model ship.     ​