A car travels between A and B stations and takes 6 hours for a round trip. It is known that the car travels 45 kilometers per hour when going, and travels 30 kilometers per hour when returning, so how many kilometers are the distance between A and B?
一辆汽车在甲、乙两站之间行驶，往返一次共用去6小时．已知汽车去时每小时行45千米，返回时每小时行30千米，那么甲、乙两站相距多少千米？
<gadget id="calculator">30 * 6</gadget>
<output>180</output>

<gadget id="calculator">45 + 30</gadget>
<output>75</output>

<gadget id="calculator">180 / 75</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">45 * (12/5)</gadget>
<output>108</output>

<result>108</result>