585 divided by 13 what dose it equal to and show step by step

How to do this , and can some one explain

Describe a situation that you could represent with the inequality x< 17

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?