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

Input: Consider Input: Infertility affects one in _ couples and affects both men and women.

Output: seven


Input: Consider Input: Ticks are small round arachnids with _ legs and can have either a soft or hard body.

Output: eight


Input: Consider Input: Autism is a developmental disability that typically appears in the first _ years of life.


Output: three