am I missing anything?
The link you provided is dead. Please check it.
Congrats of getting this far on the calculator project.
Here are some things that I noticed:
if I calculate 1+1, I get two. If I then start a new calculation and type 52, I get 50. This happens because the answer from 1+1 didn’t clear, so the new calculation was done on 252 not 5*2.
if you type too many letters, the size of the calculator starts to grow
The parentheses cause an error.
You are able to create numbers with leading 0’s (e.g. 000000001).
Other than these small things, the calculator seems to work fine.