1 30*1000/8/60=62.5 2 60*1000/5/60*0.5*60*60=360000 3 6500*1000/200000000=0.0325 4 5000/60/60*6=25/3
1 62.52 3600003 0.03254 25/3
62.5 360000 0.0325 25/3
