If the area of the small circle is 1/4 of the area of the large circle, how many times the radius of the large circle is the radius of the small circle?
小圆的面积是大圆面积的(1/4)，则大圆半径是小圆半径的多少倍
<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<result>2</result>