The length of the arc subtended by a central angle of 144° is the length of the circumference of the circle. (fraction)
圆心角为144°所对的弧长是所在圆周长的多少．(几分之几)
<gadget id="calculator">114 / 360</gadget>
<output>19/60 = around 0.316667</output>

<result>19/60 = around 0.316667</result>