There are 1, 5, 6 roosters in a chicken farm, and the number of hens is 23 times that of roosters. How many hens are there?
养鸡场养了1,5,6只公鸡，母鸡的只数是公鸡的23倍，母鸡有多少只？
<gadget id="calculator">156 * 23</gadget>
<output>3_588</output>

<result>3_588</result>