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

Example Input: Black adults have three to _ times greater incidence of bacteremia, compared with white adults.
Example Output: five

Example Input: Domestic violence occurs in one in _ families in Australia.
Example Output: four

Example Input: Fission occurs when _ flatworm splits into two flatworms.
Example Output:
one