There are 240 roosters in a chicken farm, and the number of hens is 8 times that of roosters. How many hens are there?
养鸡场有240只公鸡，母鸡的只数是公鸡的8倍．母鸡有多少只？
<gadget id="calculator">240 * 8</gadget>
<output>1_920</output>

<result>1_920</result>