# is_positive_or_multiple_of_7#

Write a function called `is_positive_or_multiple_of_7` that takes a positive integer `n` as its parameter. Write a `while` loop in this function that ends if the number `n` is a multiple of 7. Otherwise we repeatedly subtract `n` by 3, as long as the number `n` is positive. Your function returns the final value of n.

For example, if the parameter is given as `n=100`, then

• your while loop will start because `n` is positive.

• As 100 is not a multiple of 7, `n` becomes 100-3=97 and the next iteration runs.

• Again, since 97 is not a multiple of 7, it will be reduced to 94.

• In the next iteration, 94 is not a multiple of 7 yet, so `n` becomes 94-3=91, and your program goes to the next iteration.

• Finally, 91=7*13 is a multiple of 7, which makes the break statement to end the loop, and your function returns 91.

Sample Input 1:

```100
```

Sample Output 1:

```91
```

Sample Input 2:

```14
```

Sample Output 2:

```14
```

Sample Input 3:

```5
```

Sample Output 3:

```-1
```