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1 gram = 1.0 × 10-9 gigagrams (Gg)1 Gg = 1 000 000 000 g= 1 x 109 g
Gg
5.4e-1 or 5.4 x 10-1
75/10 = 7.5
Not sure what you mean, but the best guess I can make is: What does the G in Gm, Gg, etc mean - ie as a prefix to a unit. In this case it is a prefix of Giga- which means multiply the unit by 109 which is the same as 1,000,000,000: 1 Gm = 1 Gigametre = 1,000,000,000 m 1 Gg = 1 Gigagram = 1,000,000,000 g = 1,000,000 kg = 1,000 Mg = 1,000 tonnes = 1 Kilo-tonne etc.