How many grams is 3.12 thousand passengers

How many grams is 3.12 thousand passengers

1kg = 1000g
The number of high-level units into low-level units is multiplied by the number of high-level units, and the decimal point of the number of high-level units can also be moved three places to the right
3.12 kg = 3.12 × 1000 = 3120 G