390 is divisible by 3: 390/3 = 130
390 is not divisible by 9: 390/9 = 43.3 recurring (that is, 43.3333..)
390 is divisible by 10: 390/10 = 39
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By 3. 390 divided by 3 is 130.
Yes, it is divisible by 2, for a start.
9 is divisible by 3 10 is divisible by 2, 5 and 10. Everything else, no.
Think of it as 3 + .9Then it could be 30/10 + 9/1039/10 is the simplest fraction of 3.90.
180 is divisible by 2, 3, 4, 5, 9, and 10.