Because to convert km to mm,you need to multiply it by
1000 000
lolz5550000 mm
:)If you mean a capital M, then this is a megametre (10^6 m).
If you instead meant a lower case m, that is a millimetre (10^-3 m)
k is kilo (10^3) so can you now convert to the one you mean?555000mm