Uncle Li's family has 56 chickens and twice as many ducks as chickens. How many chickens and ducks are there in total?
李伯伯家养了56只鸡，鸭的只数是鸡的2倍，一共养鸡、鸭多少只？
<gadget id="calculator">56 * 2</gadget>
<output>112</output>

<gadget id="calculator">112 + 56</gadget>
<output>168</output>

<result>168</result>