Xiao Ming goes upstairs, and needs to walk 37 steps from the first floor to the third floor. If the number of steps increases by 1 when the floor is upgraded, how many steps does Xiao Ming need to walk from the first floor to the 8th floor?
小明上楼，从第一层走到第三层需要走37级台阶．如果楼层升一级其台阶数增加1阶，那么小明从第一层走到第8层需要走多少级台阶．
<gadget id="calculator">37 - 1</gadget>
<output>36</output>

<gadget id="calculator">36 / 2</gadget>
<output>18</output>

<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">18 + 6 + 18</gadget>
<output>42</output>

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">42 * (7/2)</gadget>
<output>147</output>

<result>147</result>