Tiantai Forest Farm plans to plant 3,600 trees in March. In fact, 80% of the plan is completed in half a month, and 2/5 of the plan is completed in the second half of the month. How many trees are actually planted this month?
天台林场计划三月份植树3600棵，实际上半月完成计划的80%，下半月完成计划的(2/5)，这个月实际植树多少棵？
<result>4_302</result>