The average of five numbers id 27

The average of five numbers id 27. If one number is excluded, the average becomes 23. What is the excluded number?

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 #88180