Respuesta :
You need to annex the zeroes. Don't worry about the 9 zeroes. Just do 5*1 which equals to 5. Then add the 9 zeroes back.
5,000*1,000,000 = 5,000,000,000
Divorce the zeros from the numbers:
5 x 1 = 5
Marry all the zeros with the answer.
5000000000
5 x 1 = 5
Marry all the zeros with the answer.
5000000000