NEED TOTAL OF QTY FROM [A]+[B] TO [C]
IN [C] HAVING A TO AK PRODUCTS NAMES WITH THEIR UNIQUE SERIAL NUMBERS FROM 1 TO 37.
NOW LEFT SIDE IN [A] OR [B] HAVING SOLD ITEMS BY ONLY SERIAL NUMBERS AND WE NEED TO PUT FORMULA IN [C] FROM 1ST SERIAL NUMBER FROM SOLD ITEMS BY DATE WRITTEN IN [A] OR [B]...