If the cell you selected is at the right end of a row of numbers Word proposes the formula SUM LEFT. You have the units sold and the per unit cost and you want to multiply those to get a total. Unfortunately this formula would simply add all the numbers to.
You have the units sold and the per unit cost and you want to multiply those to get a total.
Open Word and put the cursor in the blank cell at the bottom of the column that has the numbers you want to sum. Lets talk about the formula. The modified formula to do so would instead be SUM A1A3. The Table Tools tabs become available.