The correct answer is 10,000,000,000,000. When you multiply something by multiples of 10, just add a zero for every zero in the number you're multiplying. In this case, since there are 4 zeroes in 10,000, we add 4 zeroes to 1,000,000,000. For example, if we multiplied 10 by 100, this would be our answer:
10 x 100
100 - 2 zeroes
1,000 Add 2 zeroes to the end of 10
Hope this helps!
