You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
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Question: Adam bought 13 boxes of chocolate candy and gave 7 to his little brother . If each box has 6 pieces inside it , how many pieces did Adam still have ?

Answer: 36


Question: For Halloween Bianca received 78 pieces of candy . She ate 30 pieces then placed the rest into piles with 8 in each pile . How many piles could she make ?

Answer: 6


Question: Keith found 6 seashells , Jessica found 8 seashells , and Tim found 7 seashells on the beach . When they cleaned them , they discovered that 3 were cracked . How many seashells did they find together ?

Answer:
21