Xiaojun's family has 19 roosters, and the number of hens is three times that of roosters, which is 7 more. How many hens does Xiaojun's family have?
小军家养了19只公鸡，母鸡的只数是公鸡的3倍还多7只，小军家养了多少只母鸡？
<gadget id="calculator">19 * 3</gadget>
<output>57</output>

<gadget id="calculator">57 + 7</gadget>
<output>64</output>

<result>64</result>