One kind of fruit accounts for 25% of the total number of fruits in this batch. When drawing a pie chart, what is its central angle?
一种水果占这批水果总数的25%，在绘制扇形统计图时，它的圆心角应为多少．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">360 * (1/4)</gadget>
<output>90</output>

<result>90</result>