Wang Hong walks from the first floor to the fifth floor. She has to walk 18 steps to each floor. How many steps does she have to walk in total?
王红从一楼走到五楼，她每上一层楼要走18级台阶，她一共要走多少台阶？
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">18 * 4</gadget>
<output>72</output>

<result>72</result>