The students want to plant 65 trees, 6 rows have been planted, and each row has 8 trees, how many more trees will be planted?
同学们要栽65棵树，已经栽了6行，每行8棵，还要栽多少棵？
<gadget id="calculator">8 * 6</gadget>
<output>48</output>

<gadget id="calculator">65 - 48</gadget>
<output>17</output>

<result>17</result>