A car travels from A to B at a speed of 42 kilometers per hour. It travels for 5 hours and returns in 6 hours. What is the speed of the car?
一辆汽车从甲地到乙地速度为每小时42千米，行了5小时，返回用了6小时，汽车返回的速度是多少？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">42 * (5/6)</gadget>
<output>35</output>

<result>35</result>