Simplify 15r+6 (60-r) what are the units associated with the entire expression

So far, there is no units we can see becaus we have no context what this is trying to find

so

use the distributive property which goes like this: a (b+c) = ab+ac

so

first distribute

6 (60-r) = 6 (60) + 6 (-r) = 360-6r

now we have

15r+360-6r=

15r-6r+360=

9r+360

there are no units associated with the expression