There are 40 baskets of fruit in the fruit shop, including 10 baskets of apples. It is shown on the fan-shaped statistical chart. What is the central angle of the fan-shaped circle with the number of apple baskets?
水果店有水果40筐，其中苹果10筐，在扇形统计图上表示，苹果筐数的扇形圆心角就是多少°
<gadget id="calculator">10 / 40</gadget>
<output>1/4 = around 0.25</output>

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

<result>90</result>