The circumference of the small circle is (7/8) of the large circle, so what is the area of the small circle of the large circle
小圆的周长是大圆的(7/8)，那么小圆的面积是大圆的多少
<gadget id="calculator">49 / 64</gadget>
<output>49/64 = around 0.765625</output>

<result>49/64 = around 0.765625</result>