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

Ex Input:
Smokers die an average of six to _ years earlier than nonsmokers.

Ex Output:
eight


Ex Input:
Female cats can go into heat for the first time as early as _ months of age.

Ex Output:
five


Ex Input:
Titanium is _ times stronger than steel.

Ex Output:

three