It takes Xiaohong 15 seconds to go up each floor. How long does it take her to go from the first floor to the eighth floor?
小红每上一层楼需要15秒，她从一楼上到八楼需要多长时间？
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">7 * 15</gadget>
<output>105</output>

<result>105</result>