Operator Keys not working on Keyboard....

[Ananias]

The operator keys(+,-,*,/) on my keyboard are not working for some reason.
I have a Logitech Keyboard and when I went to my calculator, it was not able to recognize any of the operators-keys.
Also, I have recently installed some new softwares...

What could be the reason? Any ideas...

[Rawko]

Overuse of specific-keys on the keyboard causes problem to those keys.You seem to be an Accounts-person who uses the operator-keys very frequently.

[Killen]

Since you have installed some new softwares,that might not be the reason, but still, try to uninstall the new softwares just by chance that it would have affected certain settings.

[T.J.]

Check keyboard settings.
If they have altered, you can reset the same.

Otherwise,simply remove the operator buttons and see whether there are any dust or food particles fixed inside, clean or remove them and fit the buttons again.