Welcome to the Forum. Your code looks great! But you'll need to use the Code button at the top when you insert code here. It's the fourth button along so that when you insert your code to the forum your code looks like this:

let celcius = 32.1
let fahrenheit = "\(celcius * 9 / 5 + 32)"
print ("Fahrenheit: \(fahrenheit)° Celcius: \(celcius)°")

It makes it MUCH easier for us to read and some characters may not come across properly if you don't do the insert code button. Use the preview button if your'e not sure. Looking at your code on here I think some of your backslashes are missing when you did string interpolation. I'm sure you would not have missed that in the real code.

Keep going. You'll do well!