How do Excel tables use formulas to calculate a multiple of drop-down data?

How do Excel tables use formulas to calculate a multiple of drop-down data?

1, if the project is entered into the data, item two and its relationship is 1.5 times times, it is like we in the supermarket, said to buy the second half price, then how to enter it at this time?

2, the cursor position as shown here, enter the formula here.

3, this time we enter 1.5 times times the formula, * on behalf of multiplication (if you enter other operational symbols also apply).

4, enter, get as the figure results, the first data has been calculated.

5, this time the point has been calculated out of this data, drag down, see, is not all out of it?

6, the same, if you need to calculate other multiples of the relationship, as long as the =a2*1.5 1.5 to other multiples can be. Like 10 times times.