The students went on a spring outing. There were 105 students in the fourth grade, twice as many in the fifth grade, and 3 more students in the sixth grade than the sum of the fourth and fifth grades. How many people in the sixth grade go to the spring outing?
同学们去春游，四年级有105人，五年级的人数是四年级的2倍，六年级的人数比四五年级的人数的总和还多3人．六年级有多少人去春游？
<gadget id="calculator">105 * 2</gadget>
<output>210</output>

<gadget id="calculator">105 + 210 + 3</gadget>
<output>318</output>

<result>318</result>