80.5
0.0062
4.4722
0.0108695652173913
16.5128
16
1.087
7/644 = .0108695652
The positive integer factors of 644 are 1, 2, 4, 8, 83, 166, 332, 664. The prime factorization of 644 is 23 x 83
1288
There are many ways to do it. You could use long division, plug it into a calculator, count multiples of 23 until they reach 644. One way to work it out is to roughly guess and then correct your answer. For example, here's how I work it out in my head: I know that 644 is roughly 30 times greater than 23. Not exactly, but roughly. 30 * 23 = 690, and 690 is 46 greater than 644. 46 / 23 = 2, so the answer is 30 - 2, or 28.
For the values: 46 and 28 the LCM is: 644
5 divided by 8