Xiaoyue's house is on the sixth floor, and there are 15 steps between every two floors. How many steps does she have to walk from the first floor to her own house?
小月家在六楼，每两层楼之间15个台阶，她从一楼到自己家一共要走多少个台阶？
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

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

<result>75</result>