A ship sails from port A to port B at a speed of 45 km/h and arrives in 8 hours. It took 6 hours to return, what is the speed when returning?
一艘轮船从甲港开往乙港，速度是45千米/时，8小时到达．返回时用了6小时，求返回时的速度？
<gadget id="calculator">8 / 6</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">45 * (4/3)</gadget>
<output>60</output>

<result>60</result>