There are cats and dogs living in a strange animal farm, and there are 180 more dogs than cats. 20% of dogs think they are cats; 20% of cats think they are dogs. Among all cats and dogs, 32% think they are cats, so how many dogs are there?
一个奇怪的动物庄园里住着猫和狗，狗比猫多180只．有20%的狗错认为自己是猫；有20%的猫错认为自己是狗．在所有的猫和狗中，有32%认为自己是猫，那么狗有多少只．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">32 / 100</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">1 - (1/5) - (8/25)</gadget>
<output>12/25 = around 0.48</output>

<gadget id="calculator">(8/25) - (1/5)</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">(12/25) / (3/25)</gadget>
<output>4</output>

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">180 / 3</gadget>
<output>60</output>

<gadget id="calculator">60 * 4</gadget>
<output>240</output>

<result>240</result>