Given a rectangular vegetable field, the perimeter is 200 meters, the width is long (2/3), what is the area of the vegetable field?
已知一块长方形菜地，周长是200米，宽是长的(2/3)，菜地的面积是多少？
<gadget id="calculator">200 / 2</gadget>
<output>100</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">100 * (3/5)</gadget>
<output>60</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">100 * (2/5)</gadget>
<output>40</output>

<gadget id="calculator">60 * 40</gadget>
<output>2_400</output>

<result>2_400</result>