4 subset of a specific number >=20 and <30

I have a specific number say 84
what would be the four numbers (any combination ) i just need one that adds up to 84 which are greater/equal than 20 and less/equal to 30



the four numbers would be in four columns

regards,
vlady

? 21....
=X/4 in each column... all pointing to the 84

So if 84 is in A1, then B1 C1 D1 and E1 should all say =$A1/4