The following is a prize-winning sales advertisement of a company in Shanghai. Please calculate the proportion of the total prize amount to the total sales and compare it with the total sales.

10000×400=4000000

5 1000÷4000000= 1.275%

5 1000÷(4000000×98%)≈ 1.3%

The total prize amount accounts for 1.275% of the total sales.

If the company implements a 8.8% discount, the total amount of sales prizes will account for 1.3% of the total sales.