mountaineer climbs a mountain. It took 8 hours to go up the mountain and 5 hours to go down the mountain. How much faster is the downhill than the uphill? (The distance up and down the mountain is the same)
登山运动员攀登一座山．上山用了8小时，下山用了5小时．下山的速度比上山快百分之几？(上、下山路程相同)
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/5) - (1/8)</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">(3/40) / (1/8)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>