There are 960 ducks in a flock, 580 of which are in the water and the rest are on the shore. How many ducks are there on the shore?
一群鸭子共960只，其中有580只在水中，其余的在岸上，岸上有多少只鸭子？
<gadget id="calculator">960 - 580</gadget>
<output>380</output>

<result>380</result>