Detailed Instructions: You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
Q: for finishing touches he needed 70 gallons of paint . if he bought 23 gallons to add to his existing 36 gallons of paint how much more paint will he need ?
A:
11