If population of certain city increases at the rate of 5%

If population of certain city increases at the rate of 5%. If population in 1981 was 185220, then population in 1978 was?

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 #5304