I need vertical columns automatically subtracting as entries are made with
balance at the bottom, like so:

A is text budget items, B / C / & D are Paycheck amounts. As item amounts
are entered, should auto subtract to balance cell farther down the column.

I've tried all afternoon (actually it's 8:20pm now, so all day) to learn
how to do this, not succeeding. Everything is beyond this & going left to
right.
Those you know, please help. I just want an easy home budget sheet, not a
new career. Thanks so much for any help at all. My last math class was in
1970.
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household appliances should run themselves