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# Not sure what I'm doing wrong...

I'm not sure what exactly I'm doing wring, but it's probably to do with the end of my string...any suggestions?

method.rb
```def mod(a, b)
puts "The remainder of #{a} divided by #{b} is 'a % b'"
return a % b
end
```

This is the question: Use string interpolation to return the remainder inside the sentence βThe remainder of a divided by b is c.β where a is your βaβ variable, b is your βbβ variable, and c is the value of a % b.

MOD

Hey Melodie,

You're on the right track, but there are a couple of things:

1. You'll need to do the calculation for `a % b` before the string and store it in a variable called `c`.

2. The challenge is asking you to `return` the string, but you are using `puts`.

3. There is no purpose of the last return statement.

Below is the correct code for your reference. Have a look, and I hope it'll make sense.

```def mod(a, b)
c = a % b
return "The remainder of #{a} divided by #{b} is #{c}."
end
```

Thank you! Worked like a charm! :)

Melodie,

You want to make sure to actually run the calculation between a and b. Try something like this:

```def mod(a, b)
"The remainder of #{a} divided by #{b} is #{a % b}."
end
```

One of the benefits of Ruby is that the last line by default will be returned so you don't have to specify a return value.

Hey Tim.

Guess you type a bit faster. Lol. But, you're missing the period... and we all know how picky the challenges are.

You're right Jason, I've made that slight modification to make sure to remove any chance for error. Thanks for that catch.

Thank you both, both work. :)