There are 18 steps from the 1st floor to the 2nd floor. Xiaoming's house is on the 6th floor. How many steps does he walk from the 1st floor to the 6th floor?
从1楼到2楼共有18个台阶，小明家在6楼，他从1楼到6楼一共走多少个台阶．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">18 / 1</gadget>
<output>18</output>

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

<gadget id="calculator">18 * 5</gadget>
<output>90</output>

<result>90</result>