Replace the?

Replace the ? mark with an appropriate approximate value in the following equation’? 7 1/2 of 265.6+15% of 2564= ? - 620.5

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #65972