Vegetables are grown in a rectangular vegetable field of 320 square meters. The width of the vegetable field is 40 meters. What is the perimeter of the rectangular vegetable field in meters?
在一块320平方米的长方形菜地种菜，菜地的宽40米，这个长方形菜地的周长是多少米．
<gadget id="calculator">320 / 40</gadget>
<output>8</output>

<gadget id="calculator">8 + 40</gadget>
<output>48</output>

<gadget id="calculator">48 * 2</gadget>
<output>96</output>

<result>96</result>