The Yingcai School organized student donation activities, and the sixth grade students donated a total of 4650 yuan, 450 yuan less than twice the amount donated by the fifth grade students. How much did the fifth and sixth grade students donate in total?
英才学校组织学生捐款活动，六年级学生共捐4650元，比五年级学生捐款数的2倍少450元．五，六年级学生共捐款多少元？
<gadget id="calculator">4_650 + 450</gadget>
<output>5_100</output>

<gadget id="calculator">5_100 / 2</gadget>
<output>2_550</output>

<gadget id="calculator">2_550 + 4_650</gadget>
<output>7_200</output>

<result>7_200</result>