TASK DEFINITION: You are given a math word problem and you are supposed to apply an addition mathematical operator on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
PROBLEM: Context: In a school there are 706 girls and 222 boys. 418 more girls joined the school. 

 Question: How many pupils are there in the school now?

SOLUTION: 1346

PROBLEM: Context: A farmer had 90 tomatoes in his garden. If he picked 154 of them yesterday and 50 today. 

 Question: How many tomatoes did he pick in all?

SOLUTION: 204

PROBLEM: Context: Josh had 22 marbles in his collection. Jack gave him 20 marbles. 

 Question: How many marbles does Josh have now?

SOLUTION:
42