There are (3/2) liters in a bottle of drink, and (2/3) has been drunk, how many liters are left?
一瓶饮料有(3/2)升，已经喝了(2/3)，还剩多少升？
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

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

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

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

<result>1/2 = around 0.5</result>