The length of a dog's 3 steps is equal to that of a cat's 4 steps. A dog's 1 step is 3 decimeters, and a cat's 12 steps is how many meters.
狗走3步与猫走4步的长度相等，狗走1步是3分米，猫走12步是多少米．
<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<gadget id="calculator">27 / 10</gadget>
<output>27/10 = around 2.7</output>

<result>27/10 = around 2.7</result>