A piece of rectangular paper, 16 meters long and 6 meters wide, cut out the largest circle inside, how many square meters are left?
一张长方形纸，长16米，宽6米，在里面剪去一个最大的圆，还剩下多少平方米？
<gadget id="calculator">16 * 6</gadget>
<output>96</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<gadget id="calculator">96 - 28.26</gadget>
<output>67.74</output>

<result>67.74</result>