The time for the dog to run 5 steps, the horse can run 6 steps, the distance the horse runs for 4 steps, the dog needs to run 7 steps, now the dog has run 55 steps, the horse starts chasing it, ask the dog how far the horse can catch it ?
狗跑5步的时间，马能跑6步，马跑4步的距离，狗要跑7步，现在狗已跑出55步，马开始追它，问狗再跑多远马可以追到它？
<gadget id="calculator">55 / 11</gadget>
<output>5</output>

<gadget id="calculator">5 * 12</gadget>
<output>60</output>

<gadget id="calculator">60 / 12</gadget>
<output>5</output>

<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<result>50</result>