Uncle Li went from the county seat to the provincial capital at a speed of 120 km/h and arrived in 6 hours. It took 8 hours to return, what is the speed of return?
李叔叔从县城到省城，去时的速度是120千米/时，6小时到达．返回时用了8小时，返回的速度是多少？
<gadget id="calculator">6 / 8</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">120 * (3/4)</gadget>
<output>90</output>

<result>90</result>