Identifying the multiples of 7 is a little bit tricky, because it involve a few complicated steps. Below are the steps to tell whether a number is a multiple of 7 or not.

Let's say we would like to know if 44,478 is a multiple of 7.

Steps:

- Take off the first digit of the number and then multiply it by two, then subtract it from the number. We get 4431
- Repeat step 1 with the new number (4431) we obtained.

- Repeat step 1 with the new number (441) we obtained in step 2. If the answer that we obtained is divisible by 7, then the number is divisible by 7.

- In this case, the answer that we obtained is 42, and 42 is divisible by 7, hence 44,478 is divisible by 7.

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