Cars A and B are traveling towards each other from places A and B at the same time. Car A travels 52 kilometers per hour, and car B travels 70 kilometers per hour. The two cars meet at point C. If car A leaves 4 hours earlier, And the speed remains the same, car B travels 90 kilometers per hour, and the two cars still meet at point C. What is the distance between A and B in miles?
甲、乙两车分别从A、B两地同时相向而行，甲车每小时行52千米，乙车每小时行70千米，两车在C地相遇，若甲车提前4小时出发，且速度不变，乙车每小时行90千米，两车仍在C地相遇．A、B两地相距多少千米．
<gadget id="calculator">52 * 4 * 90 * 52</gadget>
<output>973_440</output>

<gadget id="calculator">52 * 4 * 90 * 70</gadget>
<output>1_310_400</output>

<gadget id="calculator">973_440 + 1_310_400</gadget>
<output>2_283_840</output>

<gadget id="calculator">90 * 52</gadget>
<output>4_680</output>

<gadget id="calculator">90 * 70</gadget>
<output>6_300</output>

<gadget id="calculator">70 * 52</gadget>
<output>3_640</output>

<gadget id="calculator">70 * 90</gadget>
<output>6_300</output>

<gadget id="calculator">6_300 - 3_640 - 6_300</gadget>
<output>-3_640</output>

<gadget id="calculator">4_680 + (-3_640)</gadget>
<output>1_040</output>

<gadget id="calculator">2_283_840 / 1_040</gadget>
<output>2_196</output>

<result>2_196</result>