There are 12 steps on the first floor. Xiaoming lives on the 6th floor. How many steps does he have to walk to the 5th floor after returning home?
一层楼的台阶是12级，小明家住在6楼，他回家后又到5楼要走多少级台阶．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

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

<gadget id="calculator">12 * 6</gadget>
<output>72</output>

<result>72</result>