Cars A and B are traveling towards each other from places A and B at the same time. It takes 6 hours for A to complete the trip, which is 50% faster than that of B. When they meet, A travels 180 kilometers longer than B. How much does B travel per hour? km?
甲、乙两车同时从A、B两地相向而行，甲行完全程要6小时，比乙的速度快50%，相遇时甲比乙多行180千米，求乙车每小时行多少千米？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(3/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">180 / (1/5)</gadget>
<output>900</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">900 / 6 / (3/2)</gadget>
<output>100</output>

<result>100</result>