21 Revolution per hour = 0.00583334 Hertz

Speed

71 Kilometer per second

158,822.48 Mile per Hour

km/s → mph

Concentration

12 Gram per Liter

12,000.00 Milligram per liter

g/L → mg/L

Magnetic field

87 Maxwell per square centimeter

0.0087 Tesla

Mx/cm² → T

Fuel consumption

80 Meter per liter

0.03401144 Mile per gallon us

m/L → mpg(US)

Radiation

40 Sievert

4,000.00 Rem

Sv → rem

Amount of substance

80 Megamole

80,000.00 Kilomole

Mmol → kmol