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

Input: Consider Input: Tobacco kills four million people a year, one death every _ seconds.

Output: eight


Input: Consider Input: Placental abruption is _ times more likely to occur in a multiples pregnancy.

Output: three


Input: Consider Input: Most species travel in flocks of about _ to forty.


Output: five