Uncle Zhang raised 76 ducks, and the number of chickens was exactly twice that of ducks. How many chickens and ducks did Uncle Zhang raise?
张大伯养了76只鸭，养鸡的只数正好是鸭的2倍，张大伯养鸡、鸭共有多少只？
<gadget id="calculator">76 * 2</gadget>
<output>152</output>

<gadget id="calculator">152 + 76</gadget>
<output>228</output>

<result>228</result>