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.

[EX Q]: adolfo made a tower with 35 blocks . he added some more blocks and now he has 65 blocks . how many did he have to add ?
[EX A]: 30

[EX Q]: since the result of the vote was close it was decided that they will balance the menu with both meat and vegetables . this decision was agreed upon by 154 third grade students and 237 4 grade students . how many students agreed with the decision ?
[EX A]: 391

[EX Q]: mike found 62 seashells on the beach he gave tom some of his seashells . he has 13 seashell left . how many seashells did he give to tom ?
[EX A]:
49