The length (4/5) of a wire is 8 meters, how many meters is half of the wire?
一根铁丝的(4/5)是8米，这根铁丝的一半是多少米．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">8 / (4/5)</gadget>
<output>10</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">10 * (1/2)</gadget>
<output>5</output>

<result>5</result>