Question 11989
Remember!  Kilo = 1,000

So, 1 kilogram = 1,000 grams or 1 gm = 1/1,000 Kg

(7,800g )/(1,000g/Kg) = 7.8 Kg

Similarly for liters. 

1 Kiloliter = 1,000 liters or 1 liter = 1/1,000 Kl.

 240 Kl = 240 Kl (1,000 l/Kl) = 240,000 liters