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: mrs. hilt 's favorite first grade classes are baking muffins . mrs. brier 's class bakes 18 muffins mrs. macadams 's class bakes 20 muffins and mrs. flannery 's class bakes 17 muffins . how many muffins does first grade bake in all ?

SOLUTION: 55

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: ned mowed his lawn 6 times in the spring and 5 times in the summer . how many times did he mow total ?

SOLUTION:
11