The third and fourth grades of a certain elementary school need to water the trees. In the third grade, 50 trees are watered every day, and it takes 8 days to water them. In the fourth grade, 75 trees are watered every day, and it takes 8 days to water them. ?
某小学三年级和四年级要给树浇水，三年级每天浇50棵，浇了8天来浇，四年级每天浇75棵，也浇了8天来浇，两班一共浇了多少棵树？
<gadget id="calculator">50 + 75</gadget>
<output>125</output>

<gadget id="calculator">125 * 8</gadget>
<output>1_000</output>

<result>1_000</result>