(r/s)(3)=

It’s a two part question, I’m to lazy to answer

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

Tobias gold sells computers at the office center he's guaranteed a minimum salary of $1,959 per month plus 6.3% commission on total sales how much in total sales is he

Each unit cost 14p, how much would 942 units cost?