JS Calculator - 13th bug. Anyone solved?

[Alioune01]

I just solved this problem for someone else! Here, check out this post, it might help:

Need help with vanillaJS Calculator Project

Guys, I’m almost through with my JS calc but for one minor problem. It’s with user story #13 which states: 13. If 2 or more operators are entered consecutively, the operation performed should be the last operator entered (excluding the negative (-) sign. The sequence “5 * - 5” = should produce an output of “-25” : expected ‘0’ to equal ‘-25’ AssertionError: The sequence “5 * - 5” = should produce an output of “-25” : expected ‘0’ to equal ‘-25’ (excluding the negative (-) sign was not listed …

Also, loosely explain how your code works (mainly the part where the calculation happens [what function are we editing?]).