The students planted trees. The fourth grade planted 36 trees, the fifth grade planted 22 more trees than the fourth grade, and the sixth grade planted twice the total number of trees planted in the fourth and fifth grades. How many trees were planted in the sixth grade?
同学们栽树，四年级栽了36棵，五年级比四年级多栽22棵，六年级栽的是四、五年级栽的总棵数的2倍，六年级栽了多少棵？
<gadget id="calculator">36 + 22 + 36</gadget>
<output>94</output>

<gadget id="calculator">94 * 2</gadget>
<output>188</output>

<result>188</result>