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.

Input: Consider Input: Context: For the walls of the house he would use 12 large planks of wood and 10 small planks. If large planks together need 15 pieces of nails to be secured and small planks together need 5 nails. 

 Question: How many nails does John need for the house wall?

Output: 20


Input: Consider Input: Context: Julia played tag with 15 kids on monday, 18 kids on tuesday and 97 kids on wednesday. 

 Question: How many kids did she play with on monday and tuesday?

Output: 33


Input: Consider Input: Context: At the stop 13 more people got on the bus. Initially there were 4 people on the bus. 

 Question: How many people are there on the bus now?


Output: 17