A piece of floral cloth first uses up the full length (1/4), then uses up the rest (2/3), and finally there is 3.6 meters left. How long was the piece of cloth originally?
一块花布先用去全长的(1/4)，又用去余下的(2/3)，最后还剩3.6米，这块布原来有多长？
<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">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(3/4) * (2/3)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/4) - (1/2)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3.6 / (1/4)</gadget>
<output>14.4</output>

<result>14.4</result>