Xiaoming's family lives on the 6th floor, and Xiaohua's family lives on the 4th floor, and the number of stairs between each floor is the same. Xiao Hua has to walk 48 stairs to go home, ask Xiao Ming how many stairs to go home.
小明家住在6楼，小华家住在4楼，每层楼之间的楼梯的级数都相同．小华回家共要走48级楼梯，问小明回家要走多少级楼梯．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">48 / 3</gadget>
<output>16</output>

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">16 * 5</gadget>
<output>80</output>

<result>80</result>