Cut the largest circle in a rectangular cardboard with a length of 6 cm and a width of 5 cm. What is the area of the remaining part in square meters?
在长是6厘米，宽是5厘米的长方形纸板内剪一个最大的圆，剩下部分的面积是多少平方米？
<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(5/2) ** 2</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">3.14 * (25/4)</gadget>
<output>19.625</output>

<gadget id="calculator">30 - 19.625</gadget>
<output>10.375</output>

<result>10.375</result>