A rectangular paddy field is 35 meters long and 5 meters shorter than twice the width. What is the area of this rectangular paddy field?
一块长方形的水田，长35米，比宽的2倍少5米，这块长方形水田的面积是多少．
<gadget id="calculator">5 + 35</gadget>
<output>40</output>

<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">35 * 20</gadget>
<output>700</output>

<result>700</result>