In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Input: Consider Input: Women devote their lives to raising families of six, seven and _ children.

Output: eight

Input: Consider Input: Humans brains are about _ times bigger than in chimpanzees.

Output: three

Input: Consider Input: Chicks remain with their parents for up to _ months, until they are able to fly.
Output: three