There is no sensible answer to this question. A cubic centimetre (cm3) is a measure of volume, with dimensions [L3]. A decametre is a measure of distance, with dimensions [L]. Basic dimensional analysis teaches that in most cases you cannot convert between measures with different dimensions without additional information.
100 decameters
1 meter=0.1 decameters
1 kilometer = 100 decameters
700 decameters is 7,000 meters.
2 decameters = 20 meters.
9 decameters is 900 decimeters.
729.55 centimeters is 0.72955 decameters.
5 kilometers is equivalent to 500 decameters.
3.3 kilometers = 330 decameters
There are 0.1 decameters in 100 centimeters. 100 centimeters x 0.001 decameters/1 centimeter = 0.1 decameters 1 centimeter = 0.001 decameters
When you convert 5890 kilometers into decameters you have 589,000 decameters.
100