extrapolate (something) from (something)
To deduce information from something Yeah, I extrapolated that they broke up from the scene I walked in on—Lauren sitting in the dark and crying with no sign of her so-called boyfriend anywhere.
extrapolate something from something
to reason out the answer from the known facts. I cannot extrapolate what he meant from these notes. Can you extrapolate the annual total from the company's sales so far this year?