In a strange animal village lived cats, dogs and some other animals. 10% of dogs think they are cats; 10% of cats think they are dogs. The rest of the animals are normal. One day, Little Monkey, the head of the animal village, discovered that 20% of all cats and dogs thought they were cats. If there are 65 cats in this strange animal village, what is the number of dogs?
在一个奇怪的动物村庄里住着猫、狗和其他一些动物．有10%的狗认为它们是猫；有10%的猫认为它们是狗．其余动物都是正常的．一天，动物村的村长小猴子发现：所有的猫和狗中，有20%认为自己是猫．如果这个奇怪的动物村庄里有65只猫，那么，狗的数目是多少只．
<gadget id="calculator">7 / 1</gadget>
<output>7</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">65 / (1/7)</gadget>
<output>455</output>

<result>455</result>