The distance between A and B is 832 kilometers. A car travels 56 kilometers per hour from city A to city B. Two hours later, car B drives from city B to city A, traveling 64 kilometers per hour. How many hours after car B leaves, the two cars meet?
A、B两城相距832千米，甲车从A城去B城，每小时行56千米．2小时后，乙车从B城开往A城，每小时行64千米，乙车出发几小时后两车相遇？
<gadget id="calculator">56 * 2</gadget>
<output>112</output>

<gadget id="calculator">832 - 112</gadget>
<output>720</output>

<gadget id="calculator">56 + 64</gadget>
<output>120</output>

<gadget id="calculator">720 / 120</gadget>
<output>6</output>

<result>6</result>