Build a JavaScript Calculator - tests won't pass

Tell us what’s happening:
As far as I can tell, my calculator is passing the tests when I enter the calculations manually, but when I run the tests I only get 12/16.

Your code so far

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36

Challenge: Front End Development Libraries Projects - Build a JavaScript Calculator

Link to the challenge: