The three kittens went fishing, and they caught 36 fish in total. Among them, the number of fish caught by the black cat and the flower cat was 5 times that of the white cat, and the number of fish caught by the flower cat was more than that of the other two. The number of fish caught by the cat is 9 less than twice the number of fish caught. How many fish did the black cat catch?
三只小猫去钓鱼，它们共钓上36条鱼，其中黑猫和花猫钓到的鱼的条数是白猫钓到的鱼的条数的5倍，花猫钓到的鱼比另外两只猫钓到的鱼的条数的2倍少9条．黑猫钓上多少条鱼．
<gadget id="calculator">36 + 9</gadget>
<output>45</output>

<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">45 / 3</gadget>
<output>15</output>

<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">36 / 6</gadget>
<output>6</output>

<gadget id="calculator">15 - 6</gadget>
<output>9</output>

<result>9</result>