Experimental Primary School held a book donation activity. The fifth grade students donated 380 books, and the sixth grade students donated 5% more books than the fifth grade students. How many books did the sixth grade students donate?
实验小学举行捐赠图书活动．五年级同学捐赠380本，六年级同学捐赠的图书比五年级多5%．六年级同学捐赠图书多少本？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 + (1/20)</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">380 * (21/20)</gadget>
<output>399</output>

<result>399</result>