Xiaoming and Xiaofang live in the same building. Xiaoming lives on the fifth floor and has to walk 100 steps to get home every day. Xiaofang lives on the third floor. How many steps does she have to walk home?
小明和小芳住在同一座楼里，小明住五楼，每天回家要走100级楼梯，小芳住三楼，回家要走多少级楼梯．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<result>50</result>