There are 320 chickens raised in the farm, and the number of ducks is 78 more than four times that of chickens. How many ducks are there?
养殖场养了320只鸡，鸭的只数比鸡的4倍多78只．鸭有多少只？
<gadget id="calculator">320 * 4</gadget>
<output>1_280</output>

<gadget id="calculator">1_280 + 78</gadget>
<output>1_358</output>

<result>1_358</result>