I am facing a problem to understand the calculation of shapley value on the below example:
Question: The parliament of Micronesia is made up of four political parties, $A$, $B$, $C$, and $D$, which have $45$, $25$, $15$, and $15$ representatives, respectively. They are to vote on whether to pass a $\$100$ million spending bill and how much of this amount should be controlled by each of the parties. A majority vote, that is, a minimum of $51$ votes, is required in order to pass any legislation, and if the bill does not pass then every party gets zero to spend.
Solution: we get the payoff division $(50, 16.66, 16.66, 16.66)$, which adds up to the entire $\$100$ million.
I didn't understand the solution of it how those value comes? Need Help! Thanks in advance!