Divide a 3-meter-long iron wire into 4 sections on average, how many meters is each section, and each section is the total length ((())/(())).
把3米长的铁丝平均分成4段，每段是多少米，每段是全长的((())/(()))．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

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

<result>3/4 = around 0.75</result>