TASK DEFINITION: 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.
PROBLEM: Professor Ellison weighed 2 pieces of metal for an experiment . The piece of iron weighed 11.166666666666666 pounds and the piece of aluminum weighed 0.8333333333333334 pound . How much more did the piece of iron weigh than the piece of aluminum ?

SOLUTION: 10.333333333333334

PROBLEM: A restaurant served 9 hot dogs during lunch and 2 during dinner today . It served 5 of them yesterday . How many hot dogs were served today ?

SOLUTION: 11

PROBLEM: Jonathan wants to buy a dictionary that costs $ 11 , a dinosaur book that costs $ 19 , and a children 's cookbook that costs $ 7 . He has saved $ 8 from his allowance . How much more money does Jonathan need to buy all three books ?

SOLUTION:
29