A rope is 4 meters long, (1/4) meter is used for the first time, and the remaining (2/3) is used for the second time, how many meters are left?
一根绳子长4米，第一次用去(1/4)米，第二次用去剩下的(2/3)，还剩多少米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">4 - (1/4)</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(15/4) * (1/3)</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>