8 cm: 0.04 km

one point five zero

Simplification ratio: 4 / 7:8 / 5 / 12 / 7 / 12 / 5 hours: 3 minutes 0.3 tons: 30 kg / 5 / 3 minutes: 40 seconds / 4 / 1 kg: 200 g

Love you,
4/7：8＝（4/7×7）：（8×7）=4：56＝1：14
12/5：12/7＝7：5
5 hours: 3 minutes = 300 minutes: 3 minutes = 100:1
0.3T: 30kg = 300kg: 30kg = 10:1
3 / 5 minutes: 40 seconds = 36 seconds: 40 seconds = 9:10
1g4kg: 200g = 250g: 200g = 5:4

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