car drives from place A to place B, and has traveled the entire distance (4/7). At this time, it is exactly 5 kilometers past the midpoint. How many kilometers are there between places A and B?
一辆汽车从甲地开往乙地，已行了全程的(4/7)，此时正好超过中点5千米，甲乙两地相距多少千米？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

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

<gadget id="calculator">(4/7) - (1/2)</gadget>
<output>1/14 = around 0.071429</output>

<gadget id="calculator">5 / (1/14)</gadget>
<output>70</output>

<result>70</result>