You have to give more information
Answer:

Multiple across equal sign (Denominator x Nominator and vise versa)




.7777777778 the calculator says, only because it ran out of room :)
multiply 500 by 4 to know how much is needed in grams first
500×4 = 2000
convert 2000grams to kilograms
since 1000grams make 1 kilograms....then divide 2000 by 1000
which would give you 2000/1000
answer = 2kg of sugar