There are 20 steps on the first floor, and Xiaofei lives on the 6th floor, so how many steps does he have to climb to get home?
一层楼的台阶为20级，小飞家住在6楼，那么他回家共要爬多少级．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">20 * 5</gadget>
<output>100</output>

<result>100</result>