Xiao Ming has to walk 30 steps from the first floor to the third floor, so how many steps does he need to walk from the first floor to the fifth floor?
小明从一楼走到三楼要走30个台阶，那么他从一楼走到五楼共要走多少个台阶？
<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">15 * 4</gadget>
<output>60</output>

<result>60</result>