There are 4 cards and on each card a whole number is written. All the numbers are different from one another. Two girls of grade six, Deepa and Dilruba play a game. 

Deepa takes 3 cards at a time leaving a card behind. She multiplies the numbers and gets an answer. In the same way, again, she leaves one different card and selects the other three and multiplies the numbers. She got the answers 480, 560, 420 and 336. 

Now, Dilruba has to find the numbers in each card. Dilruba worked out and found the correct numbers. 

What are they? Work out systematically and find the numbers.