You are given a math word problem and you are supposed to apply a single mathematical operator 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.

Let me give you an example: for a birthday party cody bought 30 regular sodas and 5 diet sodas . How many sodas are there ?
The answer to this example can be: 35
Here is why: total sods = 30+5 = 35

OK. solve this:
ethan has 31 presents . alissa has 22 more than ethan . how many presents does alissa have ?
Answer:
53