Your answer would be 1500g since there are 1000 grams in a kilogram.
Brief Explanation.
For every 1 kilogram there's 1000 grams
so if you were to have 1.5 kilograms you'd have
1,500 grams.
500 is half of 1000 so if you have a .5 you'd have 500 grams
which you would then add 500 to 1000 which would result in your answer
of 1500
