nA
terameter is 1012 meters, so…
4 Tm would be 4 000 000 000 000 meters
nA
gigagram is 109 grams, so… 9
Gg would be 9 000 000 000 grams
nA
megawatt is 106 watts, so… 100
MW would be 100 000 000 watts
nA
kilometer is 103 meters, so…
45 km would be 45 000 meters