A barrel of oil, if 3.2 kg is poured out, there will be (2/3) left, if (3/4) is left, how much should be poured out?
一桶油，如果倒出3.2千克，还剩(2/3)，如果要剩下(3/4)，应倒出多少？
<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">3.2 / (1/3)</gadget>
<output>9.6</output>

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

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

<gadget id="calculator">9.6 * (1/4)</gadget>
<output>2.4</output>

<result>2.4</result>