A passenger car and a truck are traveling towards each other from places A and B. Passenger cars travel 85km per hour, and trucks travel 72km per hour. After 12 hours of meeting, how many kilometers are there between A and B?
一辆客车和一辆货车从甲、乙两地相向而行．客车每小时行85km，货车每小时行72km．经过12小时相遇，甲乙两地相距多少公里？
<gadget id="calculator">85 + 72</gadget>
<output>157</output>

<gadget id="calculator">157 * 12</gadget>
<output>1_884</output>

<result>1_884</result>