Average of 9 results is 111

Average of 9 results is 111. If the average of first four results is 106 and average of last four results is 112 Then find the fifth result?

Its source gives only the correct option, without the working.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #16348