tolong ya....bantuin ini aku agak bingung

1. 3=27.500. 27.500:3=8.500
8.500x4=34.000
4/5x34.000=27.200.
2. 1=640. 1/2=320.
1/8x640=80.
80+320=400.640-400=240.
3. 1/2x1/4=1/8.
4. 1/2 x 1/3 =1/6.
5. 24.000/2=12.000x3=36.000
36.000:3=12.000x4=48.000