It takes Xiaohua 7 seconds to go from the 1st floor to the 2nd floor, how many seconds does it take for her to go from the 1st floor to the 5th floor
小华从1楼上到2楼用7秒，她从1楼上到5楼用多少秒
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">7 / 1</gadget>
<output>7</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">7 * 4</gadget>
<output>28</output>

<result>28</result>