One day, Sun Wukong picked a bunch of peaches from the mountain and planned to finish eating them in four days. On the first day, he ate (1/4) and 3 of all the peaches, and on the second day he ate (1/3) and 3 of the remaining peaches. 2, on the third day he ate the rest (1/2) and another one, on the fourth day he could only eat one, how many peaches did Sun Wukong pick from the mountain?
一天，孙悟空从山上采回一堆桃子，打算四天吃完，第一天吃了全部桃子的(1/4)又3个，第二天他吃了剩下桃子的(1/3)又2个，第三天他吃了剩下的(1/2)又1个，第四天正好只能吃1个，孙悟空从山上采回了多少个桃子？
<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 / (1/2)</gadget>
<output>4</output>

<gadget id="calculator">4 + 2</gadget>
<output>6</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

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

<gadget id="calculator">9 + 3</gadget>
<output>12</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">12 / (3/4)</gadget>
<output>16</output>

<result>16</result>