Extract all the weights and measures from the text
8000 lb / 3629 kg
3000 lb / 1361 kg
3.70 ft / 1.13 m
6.0 ft / 1.8 m
2.67 ft / 0.81m
18 hp / 13 kW
19 US gallons / 72 L / 16 imp gal
31 US gallons / 120 L / 26 imp gal