In the art festival, the sixth grade donated 650 books, 30% more than the fifth grade, how many more books were there in the sixth grade than in the fifth grade?
艺术节，六年级捐书650本，比五年级多30%，六年级比五年级多多少本？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">650 / (13/10)</gadget>
<output>500</output>

<gadget id="calculator">500 * (3/10)</gadget>
<output>150</output>

<result>150</result>