The express train and the slow train depart from A and B respectively at the same time. The slow train travels 10% of the whole journey every hour. The express train arrives at the midpoint of A and B two hours earlier (1/4) hour than the slow train, and passes through the midpoint and continues to B is driving, when the slow train reaches the midpoint, the express train is already 16.5 kilometers away from the midpoint, how many kilometers has the express train traveled in total?
快车和慢车分别从甲、乙两地同时相对开出，慢车每小时行全程的10%，快车比慢车早(1/4)小时到达甲、乙两地的中点，并通过中点继续向乙地行驶，当慢车到达中点时，快车已经与中点相距16.5千米，此时快车共行驶了多少千米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">16.5 / (1/4)</gadget>
<output>66</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / (1/10) / 2</gadget>
<output>5</output>

<gadget id="calculator">5 - (1/4)</gadget>
<output>19/4 = around 4.75</output>

<gadget id="calculator">66 * (19/4) * 2</gadget>
<output>627</output>

<gadget id="calculator">627 / 2</gadget>
<output>627/2 = around 313.5</output>

<gadget id="calculator">(627/2) + 16.5</gadget>
<output>330</output>

<result>330</result>