Answer: 10 by the 10th power.
Explanation:
If you divide 10*4/10*3 (which is 10,000/1000), you get 10.
10*9 equals to 1,000,000,000, and if you multiply that with 10, you get 10,000,000,000, which is the tenth power (especially since it has 10 zeros.)
I hoped this helped! :3