Salam, I'm given a user input that I have to sum it by itself n-times. Which means if the input is "5" for example, I should return `5 + 5 + 5 + 5 + 5 = 25`  

I used:

```
def sum(user_input):
    inp_sum = 0
    string = ''
    for n in range(0, user_input, 1):
        inp_sum += user_input
        if n != user_input -1:
            string+= "5 + "
        else: string += '5'
    return string + ' = ' + str(inp_sum)

```

but it returns

```
Failed for value=6 
Expected: 6 + 6 + 6 + 6 + 6 + 6 = 36
Actual: 5 + 5 + 5 + 5 + 5 + 5 = 36

```

what is the solution?