Divide a circle into 4 sectors, what is the ratio of the circumference of each sector to the diameter of the circle?
把一个圆平均分成4个扇形，每个扇形的周长和这个圆的直径的比值是多少π
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>