How do you write down 6.24 divided by 2.4 showing work?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Find the value of x for which line a is parallel to line b