A rectangular vegetable field has an area of 123.75 square meters and a width of 7.5 meters. How long is the fence in meters to surround the vegetable field?
一块长方形菜地的面积是123.75平方米，宽是7.5米．要在菜地的四周围一圈篱笆，篱笆的长度是多少米？
<gadget id="calculator">123.75 / 7.5</gadget>
<output>16.5</output>

<gadget id="calculator">16.5 + 7.5</gadget>
<output>24</output>

<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<result>48</result>