Issue with my Calculator

Hello everybody;
I’m working on the Calculator project I think my code did everything asked about but I can’t pass the tests exactly case 9, 12, 13 and 14; I’m really getting stuck here.
this is my Codepen link:
If someone interested to help that’s gonna be great.
thank you for everyone and sorry for my bad English.

Hi Sadhr. I’m looking for help on other issues and found your post. I checked your codepen and some other tests are also running. For test n8, you need to display the results directly on the div or an input element. You are displaying as

, so the test is not working. This might be failing the other tests as well.