The two cars, the fast and the slow, drive oppositely from places A and B at the same time, and they meet each other in 5 hours. After meeting, the two cars continue to drive forward for 3 hours. At this time, the express car is still a full distance (10/100) from place B, and the slow car travels a total of 427 kilometers. How many kilometers is the whole journey between places A and B?
快慢两车同时从甲乙两地相对开出，5小时相遇，相遇后两车继续向前行驶3小时，这时快车离乙地还有全程的(10/100)，慢车共行427千米，甲乙两地全程多少千米．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 3</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">1 - (3/5) - (1/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">427 / (7/10)</gadget>
<output>610</output>

<result>610</result>