I know this is more of a math question, but I nees to with a formula in excel to produce answer

In B5 I have the number of nights staying at hotel
In B6 I have the # of rounds the customer is going to stay
In B7 is where I have to write a fomula that will produce the answer.

Here is the prices to get the formula. I looks like if you stay two nights you get a free round. If you stay 1 night you get a discount.

Both Nights & Both Rounds: $340
Both Nights & 1 Round : $200
One Night & 1 Round: $200
1 Night: $100
1 Round Golf: $140

Thanks for help.... I have been working on this for hours and cant get it right