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

[EX Q]: Context: Edward spent $ 4 to buy books and $ 3 to buy pens. Now he has $ 12. 

 Question: How much did Edward spend on books and pens?
[EX A]: 7

[EX Q]: Context: Allan brought 5 balloons and Jake brought 4 balloons to the park. Allan then bought 3 more balloons at the park. 

 Question: How many balloons did Allan bring to the park?
[EX A]: 8

[EX Q]: Context: Lucy went to the grocery store. She bought 4 packs of cookie, 22 packs of cake and 16 packs of chocolate. 

 Question: How many packs of groceries did she buy in all?
[EX A]:
42