Subtract from one cell until it reaches "0" before moving on to another cell

[HelpExcelHelpers]

	I	J	K	L	M
1	100	200	0	175	125
2	0	125	0	175	125

<tbody>
</tbody>

ROW ONE: When entering a value in L1, I would like the amount to deduct from I1 until it reaches zero before deducting from J1. M1 is the balance for the row

ROW TWO: Is how it should look if the formula is correct.

 

[HelpExcelHelpers]

YES - I figured it out on my own. How do I mark this thread SOLVED?