To build a section of wall, the total length (1/3) and 2 meters was built on the first day, the remaining (1/2) was 1 meter less on the second day, and the remaining (3/4) was built on the third day ) is 1 meter longer, and there are still 3 meters left to be built. How long is this wall in meters?
要砌一段围墙，第一天砌了总长的(1/3)又2米，第二天砌了剩下的(1/2)少1米，第三天砌了剩下的(3/4)多1米，还剩下3米没有砌完．这段围墙长多少米．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">4 / (1/4)</gadget>
<output>16</output>

<gadget id="calculator">16 - 1</gadget>
<output>15</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">15 / (1/2)</gadget>
<output>30</output>

<gadget id="calculator">30 + 2</gadget>
<output>32</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">32 / (2/3)</gadget>
<output>48</output>

<result>48</result>