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.

Input: Consider Input: lastly rob compared canada 's cn tower and seattle 's space needle . how tall is the space needle if the cn tower stands at 553 m high and it is taller than the space needle by 369 m ?

Output: 184

Input: Consider Input: you have 7 balloons and your friend has 5 balloons . what 's the difference of the number of your balloons and your friend 's balloons ?

Output: 2

Input: Consider Input: mrs. hilt had 15 cents . she bought a pencil for 11 cents . how much money did she have left ?
Output: 4