Cars A and B are traveling towards each other from cities A and B, which are 330 kilometers apart. Car A starts from city A first, and after a while, car B starts from city B, and the speed of car A is that of car B. Speed (5/6). When two cars meet, car A travels 30 kilometers longer than car B, how many kilometers does car A drive before car B starts.
甲、乙两车从相距330千米的A、B两城相向而行，甲车先从A城出发，过一段时间后，乙车才从B城出发，并且甲车的速度是乙车的速度的(5/6)．当两车相遇时，甲车比乙车多行驶了30千米，则甲车开出多少千米，乙车才出发．
<gadget id="calculator">330 - 30</gadget>
<output>300</output>

<gadget id="calculator">300 / 2</gadget>
<output>150</output>

<gadget id="calculator">330 - 150</gadget>
<output>180</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">150 * (5/6)</gadget>
<output>125</output>

<gadget id="calculator">180 - 125</gadget>
<output>55</output>

<result>55</result>