Hi need help for this probability question :

An airplane company is offering set meals where the passengers select (i) 3 free deserts from a list of 9 possible deserts, (ii) a free main course from a list of 15 possible main courses and (iii) a free beverage from a list of 7 beverages. Find the number of possible "3-free deserts-1-free main course -1-free beverage" combinations. Assume that the 3 deserts are different.

Thanks so much for help.