A certain engineering team repaired a road, the first time it repaired the full length (1/4), and the second time it repaired the rest (1/3), the remaining part of the road was not repaired.
某工程队修一条路，第一次修了全长的(1/4)，第二次修了剩余的(1/3)，还剩这条路的多少没有修．
<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">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">1 - (1/4) - (1/4)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>