Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Input: Consider Input: Couples spend ____ billion dollars a year on infertility treatments.

Output: two


Input: Consider Input: Grasshoppers begin egg laying one to ____ weeks after becoming adults.

Output: three


Input: Consider Input: Cougars have ____ toes on the forepaws and four on the hind paws.


Output: five