There are (3/2) tons of coal, (1/4) is transported away in the first time, and (1/2) tons are transported away in the second time, and the amount transported in the second time is the amount of the first time.
有(3/2)吨煤，第一次运走(1/4)，第二次运走(1/2)吨，第二次运的是第一次的多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(3/2) * (1/4)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(1/2) / (3/8)</gadget>
<output>4/3 = around 1.333333</output>

<result>4/3 = around 1.333333</result>