A passenger train and a freight train set off at the same time from places A and B, which are 568 kilometers apart, and travel toward each other. After 2 hours, the distance between the two cars is still 108 kilometers. Given that the passenger car travels 120 kilometers per hour, find the speed of the truck.
一列客车和一列货车从相距568千米的甲、乙两地同时出发，相向而行，2小时后，两车之间还相距108千米．已知客车每小时行驶120千米，求货车行驶的速度．
<gadget id="calculator">568 - 108</gadget>
<output>460</output>

<gadget id="calculator">460 / 2</gadget>
<output>230</output>

<gadget id="calculator">230 - 120</gadget>
<output>110</output>

<result>110</result>