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

Example Input: Smokers die an average of six to _ years earlier than nonsmokers.
Example Output: eight

Example Input: Goats are _ legged animals.
Example Output: four

Example Input: Green soybeans are usually available frozen and can be stored in a freezer for up to _ months.
Example Output:
six