Uncle Wang’s family has 21 geese, and the number of ducks is three times that of geese. How many ducks and geese are there in total?
王大伯家养了21只鹅，养鸭的只数是鹅的3倍，养的鸭和鹅一共多少只？
<gadget id="calculator">21 * 3</gadget>
<output>63</output>

<gadget id="calculator">63 + 21</gadget>
<output>84</output>

<result>84</result>