Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

the group then went on to check out the houses along broadway street and the scary werewolf avenue . after the long walk they decided to count their candy again . if mary has 5 chewing gums sam has 10 chewing gums and sue has 15 chewing gums how many chewing gums did the 3 have in all ?
30

for halloween debby and her sister combined the candy they received . debby had 32 pieces of candy while her sister had 42 if they ate 35 pieces the first night how many pieces do they have left ?
39

52 children and 29 adults went to the track meet . the stadium has 95 seats . how many seats were empty ?
14