The students went to the park. There were 86 students in the third grade, 18 more students in the fourth grade than the third grade, and twice as many students in the fifth grade as the total number of the third and fourth grades. How many people went to the fifth grade?
同学们去游公园．三年级去了86人，四年级比三年级多去18人，五年级去的人数是三、四年级总人数的2倍．五年级去了多少人？
<gadget id="calculator">86 + 86 + 18</gadget>
<output>190</output>

<gadget id="calculator">190 * 2</gadget>
<output>380</output>

<result>380</result>