Answer:
4,005,090,807
Explanation:
4 x 1,000,000,000 + 5 x 1,000,000 + 9 x 10,000 + 8 x 100 + 7 x 1
4 * 1,000,000,000 = 4,000,000,000
5 * 1,000,000 = 5,000,000
9 * 10,000 = 90,000
8 * 100 = 800
7 * 1 = 7
Add it all together and you get 4,005,090,807
I hope this helped. Sorry if you get this wrong.