Uncle Li set off for Jinan, and it took 4 hours to go at a speed of 120 km/h. It took 3 hours to return, what was the return speed?
李叔叔出发去济南，去的时候用了4小时，速度是120千米/时．返回时用了3小时，返回的速度是多少？
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">120 * (4/3)</gadget>
<output>160</output>

<result>160</result>