Two cars, A and B, drive from opposite places at the same time. They meet each other in 3 hours. When they meet, car B travels the whole distance (7/12). Car A travels 120 kilometers. How many kilometers does car B travel per hour?
甲、乙两辆汽车同时从两地相对开出，3小时相遇，相遇时乙车行了全程的(7/12)，甲车行了120千米，乙车每小时行多少千米？
<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">1 - (7/12)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">120 / (5/12)</gadget>
<output>288</output>

<gadget id="calculator">(7/12) / 3</gadget>
<output>7/36 = around 0.194444</output>

<gadget id="calculator">288 * (7/36)</gadget>
<output>56</output>

<result>56</result>