A rectangular piece of paper is cut from the middle to form two squares with side lengths of 40 cm. What is the area of the original rectangle?
一个长方形纸片，从中间剪开后正好是两个边长为40厘米的正方形，原来长方形的面积是多少平方分米？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">40 * 2 * (2/5)</gadget>
<output>32</output>

<result>32</result>