The forest farm has planted 280 poplars and 4 rows of pine trees this year, with 25 trees in each row. How many poplars and pine trees are planted in this forest farm?
林场今年栽了280棵杨树，还栽了4行松树，每行25棵，这个林场共栽杨树和松树多少棵？
<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<gadget id="calculator">100 + 280</gadget>
<output>380</output>

<result>380</result>