A 4-meter-long rope, 25% is cut off for the first time, and (1/4) meter is cut off for the second time, how many meters are left?
一根长4米的绳子，第一次剪去25%，第二次剪去(1/4)米，还剩多少米．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">(1/4) / 4</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">4 * (1/16)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">4 - 1 - (1/4)</gadget>
<output>11/4 = around 2.75</output>

<result>11/4 = around 2.75</result>