Two cars A and B are traveling toward each other at a distance of 380 kilometers. Car A travels a kilometer per hour. Car A goes ahead for 1 hour. Car B meets A after 3 hours. What is the distance traveled by car B per hour?
甲乙两车在相距380千米的两地相向而行，甲车每小时行驶a千米，甲车先行1小时，乙车经过3小时与甲相遇，则乙车每小时行驶多少千米．
<gadget id="calculator">380 / 3</gadget>
<output>380/3 = around 126.666667</output>

<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">(380/3) - (4/3)</gadget>
<output>376/3 = around 125.333333</output>

<result>376/3 = around 125.333333</result>