The distance between A and B is 480 kilometers. A car transports goods from A to B. When it goes there, it travels at a speed of 60 kilometers per hour. When it returns, it is full of goods and travels at a speed of 40 kilometers per hour. drive. What is the average round trip speed of this car in kilometers per hour?
甲、乙两地相距480千米，一辆汽车从甲地到乙地运货，去时以每小时60千米的速度行驶，返回时由于装满了货物，以每小时40千米的速度行驶．这辆汽车往返的平均速度是每小时多少千米？
<gadget id="calculator">480 / 60</gadget>
<output>8</output>

<gadget id="calculator">480 / 40</gadget>
<output>12</output>

<gadget id="calculator">8 + 12</gadget>
<output>20</output>

<gadget id="calculator">2 / 20</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">480 * (1/10)</gadget>
<output>48</output>

<result>48</result>