I have 3 columns:
in first cell (A1) i have a code: 553482300040
in second cell (B1) quantity: 1000
and in third cell (C1) i have first 2 numbers from first cell (A1), in that case 55.
In second row, first cell (A2) i have another code, but begins with 55 too, in second cell (B2) i have quantity for this: 500.
What i have to do is to sum the quantity of the products in third cell, row 1 (A3).
Can someone help me?
Thank you!
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