TASK DEFINITION: Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.
PROBLEM: a pet store had 7 siamese cats . if they sold 4 of them how many cats did they still have ?

SOLUTION: 3

PROBLEM: professor treehead of the flora university requested his students to participate . he said that they planted 15 species of trees in the natural park 20 species of trees in the neighboring forest and 10 species of trees all around different locations in town . how many species of trees were planted by the students ?

SOLUTION: 45

PROBLEM: lastly he went to a music store and bought a new set of speakers for his dad 's entertainment system . if the initial price of the speakers is $ 475 he got it for $ 199 how much money was he able to save from having a discount ?

SOLUTION:
276