A monkey ate the peaches from the peach tree. On the first day, it ate (1/30), and in the next 28 days, it stole (1/29), (1/28),..., (1/3), (1/2). After 29 days of stealing, there are only 2 peaches left on the tree. Question: How many peaches were there on the tree?
一只猴子偷吃桃树上的桃子，第一天偷吃了(1/30)，以后的28天，分别偷了当天现有桃子的(1/29)，(1/28)，…，(1/3)，(1/2)．偷了29天后，树上只剩下2个桃．问：树上原有多少个桃？
<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">1 - (1/30)</gadget>
<output>29/30 = around 0.966667</output>

<gadget id="calculator">58 / (29/30)</gadget>
<output>60</output>

<result>60</result>