Answer:
50000000000
Explanation:
5 x 1 = 5
so then you change the 1 to a 5, after you can add the 2 zeros from the 500 in the end of 100,000,000
You can do that with any multiplication problem that is like that if there is only one number that's not zero
The picture I put is an example, it shows to multiply the first numbers then add the remaining zeros to the greater number!
