On Arbor Day, the sixth grade students of Guangming Primary School participated in the voluntary tree planting activity. They planned to plant 240 trees throughout the day. As a result, they completed the plan in the morning (3/5) and in the afternoon (3/5). How many trees did they plant in total? Has the tree planting task been completed?
植树节这天，光明小学六年级的学生参加了义务植树活动，计划全天植树240棵，结果上午完成计划的(3/5)，下午也完成计划的(3/5)．他们一共植树多少棵？是否完成了植树任务？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) + (3/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">240 * (6/5)</gadget>
<output>288</output>

<result>288</result>