Li Village wants to green the barren hills, and plans to plant 1,470 trees. In fact, (4/7) completed the tree planting plan for the first time, and (2/3) completed the tree planting plan for the second time. How many trees did the two tree plantings exceed the planned task?
李村要绿化荒山，计划植树1470棵，实际第一次完成植树计划的(4/7)，第二次完成植树计划的(2/3)．两次植树共超过计划任务多少棵？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(4/7) + (2/3)</gadget>
<output>26/21 = around 1.238095</output>

<gadget id="calculator">1_470 * (26/21)</gadget>
<output>1_820</output>

<gadget id="calculator">1_820 - 1_470</gadget>
<output>350</output>

<result>350</result>