The diameter of the small circle is (3/4) that of the large circle. The area of the large circle is 84 square centimeters larger than the area of the small circle. Find the area of the large circle.
小圆直径是大圆的(3/4)，大圆面积比小圆的面积多84平方厘米，求大圆的面积．
<gadget id="calculator">16 / 9</gadget>
<output>16/9 = around 1.777778</output>

<gadget id="calculator">(16/9) - 1</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">84 / (7/9)</gadget>
<output>108</output>

<gadget id="calculator">108 * (16/9)</gadget>
<output>192</output>

<result>192</result>