What is the area of a (4/7) square meter rectangular paper after folding it in half and then folding it in half again?
把一张(4/7)平方米的长方形纸对折再对折后，它的面积是多少平方米．
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * (1/2)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(4/7) * (1/4)</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>