chicken farm uses 2,400 eggs to incubate chicks, and 5% of them fail to hatch. How many chicks hatch?
养鸡场用2400个鸡蛋孵小鸡，有5%没有孵出来，孵出来的小鸡有多少只？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">2_400 * (19/20)</gadget>
<output>2_280</output>

<result>2_280</result>