Xiao Zhang and Xiao Wang live in the same building, and the number of stairs between two adjacent floors of this building is the same. Xiao Zhang lives on the 4th floor and has to walk 54 stairs to get home. Xiao Wang lives on the 8th floor. How many steps does Xiao Wang have to go home.
小张和小王住在同一幢楼里，这幢楼相邻两层间的楼梯级数相同．小张住4楼，回家要走54级楼梯，小王住在8楼，小王回家要走多少级楼梯．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">54 / 3</gadget>
<output>18</output>

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

<gadget id="calculator">18 * 7</gadget>
<output>126</output>

<result>126</result>