A rectangular plank is 1.6 meters long and 75% of its width. If you want to saw the largest circle from this plank, what is the area of the remaining plank in square meters?
一块长方形木板，长1.6米，宽是长的75%，要在这块木板上锯下一个最大的圆，剩下木板的面积是多少平方米？
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1.6 * 1.6 * (3/4)</gadget>
<output>1.92</output>

<gadget id="calculator">(3/4) / 2</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1.6 * (3/8)</gadget>
<output>0.6</output>

<gadget id="calculator">0.6 ** 2</gadget>
<output>0.36</output>

<gadget id="calculator">3.14 * 0.36</gadget>
<output>1.1304</output>

<gadget id="calculator">1.92 - 1.1304</gadget>
<output>0.7896</output>

<result>0.7896</result>