You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
One example is below.
Q: Last year , 90171 people were born in a country , and 16320 people immigrated to it . How many new people began living in the country last year ?
A: 106491
Rationale: Total people living in the country = born - immigrated = 90171 - 16320 = 106491
Q: For Halloween Megan received 11 pieces of candy from neighbors and 5 pieces from her older sister . If she only ate 8 pieces a day , how long would the candy last her ?
A:
2