Mingming’s family planted 800 apple trees, but they planted 280 fewer pear trees than apple trees. How many fruit trees did Mingming’s family plant in total?
明明家种苹果树800课，种的梨树比苹果树少280棵，明明家一共种了多少棵果树？
<gadget id="calculator">800 - 280</gadget>
<output>520</output>

<gadget id="calculator">800 + 520</gadget>
<output>1_320</output>

<result>1_320</result>