A professional chicken farmer raises 120 chickens, including 24 roosters. If a fan-shaped statistical chart is made, what is the central angle of the fan-shaped circle representing the number of roosters?
一个养鸡专业户养了120只鸡，其中有公鸡24只，如果制成扇形统计图，表示公鸡只数部分的扇形圆心角应为多少度．
<gadget id="calculator">24 / 120</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">360 * (1/5)</gadget>
<output>72</output>

<result>72</result>