I could give you the answer, but it will be more fun if you try to figure it out yourself. Here are the basic rules: To the right of "millions", there should be 6 digits. In other words, write the "13" and make sure there are 6 digits to the right of these digits. To the right of the thousands, in this case, the digits "18", there should be 3 digits. Use zeroes to fill out.
13,018,000
13,018,000.
13,000,0000
9,018,000
1,180,000
13,018,000
13,018,000.
423,013,118.
18,013 or 18013
13,000,013
Eighteen million would be written as 18,000,000 or 18 000 000
13,000,0000
9,018,000
1,180,000
1,013,000
It is 13000002.
13 million looks like this 13,000,000 it is quite simple