Multiply 345 by 15 to get the answer: 345 * 15 = 5175
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2.8986
Fifteen is to five as nine is to three, because 15 divided by 3 equals 5, and 9 divided by 3 equals 3.
115
Half of 345 is 172.5. To find half of a number, you simply divide it by 2. In this case, 345 divided by 2 equals 172.5. This is because half of a number is essentially splitting it into two equal parts.
8.625