The area of the small circle is equal to the area of the large circle (2/3). The sum of the areas of these two circles is 100 square centimeters. What is the area of the large circle in square centimeters?
小圆的面积相当于大圆的面积(2/3)，这两个圆的面积和是100平方厘米，大圆的面积是多少平方厘米．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 + (2/3)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">100 / (5/3)</gadget>
<output>60</output>

<result>60</result>