In the book donation activities organized by the school, students in the lower grades donated 206 books, and students in the upper grades donated 88 books, which was four times more than those in the lower grades. How many books did the students in the upper grades donate?
在学校组织的捐书活动中，低年级同学捐了206本，高年级同学捐的本数比低年级的4倍多88本，高年级同学捐了多少本？
<gadget id="calculator">206 * 4</gadget>
<output>824</output>

<gadget id="calculator">824 + 88</gadget>
<output>912</output>

<result>912</result>