a) 913,232413m3 = 913,232413 x 1000 x 1000cm3 = 913232413cm3 

=> 913,232413m3 = 913 232 413cm3.

b)  123451000 = 12,345

=> 123451000 m= 12,345m3.

c)  8372361100 = 83723,61

83723,61m3 = 83723,61 x 1000dm3 = 83723610dm3 

=> 8372361100m3 > 8 372 361dm3.