I would split it up evenly 6 ways- I have a young family of four, so four splits would go to benefit each of us. The I would give the remaining splits to my husbands family and mine. They would have to decide how that money would be split. Honestly, I think that if we landed a huge win (my husband plays to my horror) it would kill the marriage. One of the major bonds for us is the fact that we need each other to make the family work financially, mentally, emotinally, ext... That much money stands to robb us of that purpose by way of filling those needs via outside factors and would pit us against eachother.