import Foundation
let eight: Deicmal = pow(2,3)
print(eight)
8

However do not try to
let eightWhoops: Int = pow(2,3)
error: cannot convert value of type 'Decimal' to specified type 'Int'
let eight: Int = pow(2,3)
^~~~~~~~
Int( )

Also the way to enter a new line in markdown is weird (two spaces at the end of the line).
https://daringfireball.net/projects/markdown/syntax#p

And don’t forget the automatic links style (http address in between <>).
https://daringfireball.net/projects/markdown/syntax#misc

Prob will be worth it to know this stuff though, yeah.