There are 52 people in the fifth grade planting trees, each planting 26 trees, and 48 people planting trees in the fourth grade, each planting 25 trees. How many trees are planted in the fourth and fifth grades?
五年级有52人去植树，每人植26棵，四年级有48人植树，每人植25棵，四、五年级一共植多少棵？
<gadget id="calculator">52 * 26</gadget>
<output>1_352</output>

<gadget id="calculator">48 * 25</gadget>
<output>1_200</output>

<gadget id="calculator">1_352 + 1_200</gadget>
<output>2_552</output>

<result>2_552</result>