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

Input: Consider Input: Smokers tend to become disabled and retire early _ times more than non-smokers.

Output: six


Input: Consider Input: Saturated bonds are when each of the carbons has _ single bonds as in the top figure.

Output: four


Input: Consider Input: Potassium chloride is produced in _ major size grades.


Output: four