A long (3/4) meter ribbon, cut off (2/3), how much is left.
一条长(3/4)米的丝带，剪去它的(2/3)，还剩多少．
<gadget id="calculator">3 / 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">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

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

<result>1/4 = around 0.25</result>