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.

Q: 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 ?

A: 21
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Q: A new virus is released on the internet . The administrator of a department 's LAN is given 5 minutes by a manager to estimate the impact . The administrator samples 12 of the PCs connected to the LAN and finds that 7 are infected . Use a proportion to estimate the number of infected PCs if there are a total of 216 PCs connected to the LAN .

A: 126
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Q: If a pair of shoes that cost 50 dollars was marked down by 8 % , how much do they cost now ?

A:
46
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