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]: On her vacation last summer , Trisha walked all over New York City to buy souvenirs . First , she walked 0.1111111111111111 mile from her hotel to a postcard shop . Then she walked 0.1111111111111111 mile from the postcard shop to a T - shirt shop and 0.6666666666666666 mile from the T - shirt shop back to the hotel . How many miles did Trisha walk in all ?
[A]: 0.8888888888888888


[Q]: In fourth grade there were 10 students at the start of the year . During the year 4 students left and 42 new students came to school . How many students were in fourth grade at the end ?
[A]: 48


[Q]: Sally saw 1 dozen birds in a tree . How many birds did Sally see ?
[A]:
12