Add column in Excel based on the value of other columns.xlsx

	A	B	C	D	E	F
1	customer_id	customer_name	amount_credit	amount_debit	prev_bal	curr_bal
2	1053	Bhavya Gupta	1000	0	1000	2000
3	1053	Bhavya Gupta	800	0	200	1000
4	298	prerna	0	100	0	-100
5	1053	Bhavya Gupta	200	0	0	200
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