You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[Q]: For a birthday party Tom bought 4 regular sodas and 52 diet sodas . If his fridge would only hold 7 on each shelf , how many shelves would he fill up ?
[A]: 8


[Q]: There were 58 geese and 37 ducks in the marsh . How many birds were in the marsh ?
[A]: 95


[Q]: William starts with 15 tickets . He buys 3 more . How many tickets does William end with ?
[A]:
18