A bus travels at a speed of 57 km/h. It takes 5 hours to travel from point A to point B, and it takes 2 hours less to return to point A by the same route. What is the speed when returning?
一辆大客车的速度是57千米/时，从甲地到乙地用了5小时，按原路返回到甲地少用了2小时，返回时的速度是多少？
<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">57 * (5/3)</gadget>
<output>95</output>

<result>95</result>