You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Input: Consider Input: Lucy has an aquarium with 212 fish . Lucy wants to buy 68 more fish . How many fish would Lucy have then ?

Output: 280


Input: Consider Input: Sara has 31 red and 15 green balloons . Sandy has 24 red balloons . How many red balloons do they have in total ?

Output: 55


Input: Consider Input: A spaceship traveled 0.5 light - year from Earth to Planet X and 0.1 light - year from Planet X to Planet Y . Then it traveled 0.1 light - year from Planet Y back to Earth . How many light - years did the spaceship travel in all ?


Output: 0.7