certain class of resistance students planted trees, if each person planted 1 tree less than planned, and 33 students planted trees, then the total number of trees planted would be 13 less than planned, and if each person planted 1 tree more than planned, there would be only 28 students Students plant trees, so the total number of trees planted is 13 more than planned, how many trees were originally planned to be planted?
某班阻值学生去植树，如果每人比计划少种1棵树，有33名同学植树，那么植树总数会比计划少种了13棵，如果每个人比计划多种1棵，只有28名同学植树，那么植树总数比计划多种13棵，则本来计划种多少棵树？
<gadget id="calculator">28 - 13 - 13</gadget>
<output>2</output>

<gadget id="calculator">33 + 2</gadget>
<output>35</output>

<gadget id="calculator">33 - 28</gadget>
<output>5</output>

<gadget id="calculator">35 / 5</gadget>
<output>7</output>

<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">6 * 33</gadget>
<output>198</output>

<gadget id="calculator">198 + 13</gadget>
<output>211</output>

<result>211</result>