A car drives from Zhongshan to Dongguan with an average speed of 80 km/h and arrives in (23/20) hours. When returning to the original road, there was a traffic jam on the road, and it took (92/45) hours to return. What is the average speed of the car when returning?
一辆汽车从中山开往东莞，平均以80千米/时的速度行驶，(23/20)小时到达．原路返回时路上塞车，(92/45)小时才回到．请问返回时汽车的平均速度是多少？
<gadget id="calculator">23 / 20</gadget>
<output>23/20 = around 1.15</output>

<gadget id="calculator">92 / 45</gadget>
<output>92/45 = around 2.044444</output>

<gadget id="calculator">(23/20) / (92/45)</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">80 * (9/16)</gadget>
<output>45</output>

<result>45</result>