The tree is full of peaches. The little monkey found out that he ate all the peaches on the tree (2/5) on the first day and threw away 4 peaches. The number of peaches eaten on the second day plus 3 is the first day. (5/8) of the number of peaches left, ask at least how many peaches are left on the tree at this time?
树上结满了桃子，小猴发现的第一天吃掉树上所有桃子的(2/5)，还扔掉了4个，第二天吃掉的桃子数再加3个就是第一天所剩桃子数的(5/8)，问这时树上至少还剩多少桃子？
<gadget id="calculator">9 / 40</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">(9/40) * 20</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">60 / 40</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(9/2) + (3/2)</gadget>
<output>6</output>

<result>6</result>