Uncle Wang raised 360 ducks, 78 more than the number of chickens. How many chickens and ducks are there altogether?
王大爷家养鸭360只，比养鸡的只数多78只．鸡和鸭一共多少只？
<gadget id="calculator">360 - 78</gadget>
<output>282</output>

<gadget id="calculator">360 + 282</gadget>
<output>642</output>

<result>642</result>