From the first floor to the sixth floor, there are 12 steps to go up each floor, Xiao Ming needs 15 seconds to go up each floor, how many steps did he walk from the first floor to the sixth floor, and how long did it take?
从一楼到六楼，每上一层要走12个台阶，小明每上一层需要15秒，他从一楼到六楼共走了多少个台阶，需要多长时间？
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">15 * 5</gadget>
<output>75</output>

<result>75</result>