Implement a function, `multiples(m, n)`, which returns an array of the first `m` multiples of the real number `n`. Assume that `m` is a positive integer.
Ex.
```
multiples(3, 5.0)
```
should return
```
[5.0, 10.0, 15.0]
```
def multiples(m, n):
    solution = []
    for i in range(1, m+1):
        solution.insert(i, n * i)
    return solution
def multiples(m, n):
    solution = []
    for i in range(1, m+1):
        solution.insert(i, n * i)
    return solution