The average of five numbers is 45

The average of five numbers is 45. If one number is excluded, the average becomes 38. The excluded number is?

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 #47963