20*800=16000 9000:300=30 1200*40=48000 48000:6000=8
80*400=32000 12000:300=40 2100*30=63000 18000:6000=3
12*900=10800 27000:300=90 2700*20=54000 35000:5000=7
5*7000=35000 21000:300=70 1800*30=54000 63000:7000=9
15*3000=45000 24000:300=80 2400*50=120000 81000:9000=9