Shengli Primary School donated 240 books for the students in the mountainous area, donated 240 books for the fourth grade, twice as much as the fourth grade for the fifth grade, 130 more books for the sixth grade than the fifth grade, how many books did the sixth grade donate?
胜利小学为山区同学捐书，四年级捐240本，五年级捐的是四年级的2倍，六年级比五年级多捐130本，六年级捐了多少本？
<gadget id="calculator">240 * 2</gadget>
<output>480</output>

<gadget id="calculator">480 + 130</gadget>
<output>610</output>

<result>610</result>