A rectangular iron sheet is 8 decimeters long and long (3/4) wide. After cutting off the largest circle, how many square decimeters of iron sheet are left?
一个长方形铁皮，长8分米，宽是长的(3/4)，剪去一个最大的圆形后，还剩多少平方分米的铁皮？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">8 * (3/4)</gadget>
<output>6</output>

<gadget id="calculator">8 * 6</gadget>
<output>48</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">48 - 28.26</gadget>
<output>19.74</output>

<result>19.74</result>