I have a LibreOffice Calc spreadsheet that's basically like below.

In Foxpro I can say sum Amount for Category = a to Income

Then sum Amount for Category = b to Expense

Then I say Balance = Income - Expense

And lastly I say ? Balance and    that shows the balance

The ? means print to screen.

Is there a simple way to achieve the same thing in LibreOffice Calc?  In Foxpro I can create a text file with those commands exactly as I've written them and then just run the file anytime I want the balance.  Foxpro doesn't run on Windows 10, it's a 16 bit program and I've experimented extensively trying to make it run without success.