Xiaohong lives on the 5th floor. She has to walk 13 steps to go up each floor. How many steps does she need to walk from the first floor to the 5th floor?
小红家住5楼，她每上一楼要走13级台阶，从第一层到第5层要走多少级台阶．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">13 * 4</gadget>
<output>52</output>

<result>52</result>