You will be given a definition of a task first, then some input of the task.
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.

Context: Helen the hippo and her friends are preparing for thanksgiving at Helen's house. Helen baked 31 cookies yesterday 270 cookies this morning and 419 cookies the day before yesterday.

Question: How many cookies did Helen bake till last night?
Output:
450