There are 2,240 small chickens in the chicken farm. The medium chickens belong to the small chickens (5/8), and the large chickens belong to the medium chickens (6/7). How many large chickens are there?
鸡场养有小鸡2240只，中鸡是小鸡的(5/8)，大鸡是中鸡的(6/7)，大鸡有多少只？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">2_240 * (5/8) * (6/7)</gadget>
<output>1_200</output>

<result>1_200</result>