We know that: 10mm = 1cm
100cm = 1m
From these conversions, we can simply say that 1000mm = 1m
Now if 1000mm = 1m, then to convert milliliters (mm) to meters (m) should be pretty straight forward.
(1000mm)^{3} = (1m)^{3}
X = 36m^3 ..... here the cubic meters cancels out, leaving mm
thus, (36 * 1000) mm^3 = 36000 cubic meters