car travels between A and B, travels 8 kilometers per hour when going there, and travels 12 kilometers per hour when returning, what is the average speed of this car traveling between A and B?
汽车往返于A、B两地，去时每小时行8千米，返回时每小时行12千米，求这辆汽车往返于A、B两地的平均速度？
<gadget id="calculator">1 + 1</gadget>
<output>2</output>

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

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/8) + (1/12)</gadget>
<output>5/24 = around 0.208333</output>

<gadget id="calculator">2 / (5/24)</gadget>
<output>48/5 = around 9.6</output>

<result>48/5 = around 9.6</result>