Two cars leave opposite places A and B at the same time and meet at a distance of 7.2 kilometers from the midpoint. When they met, car A traveled 46% of the whole journey. How many kilometers are there between A and B?
两辆汽车同时从甲、乙两地相对开出，在离中点7.2千米处相遇．相遇时，甲车行了全程的46%．甲、乙两地相距多少千米？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">46 / 100</gadget>
<output>23/50 = around 0.46</output>

<gadget id="calculator">(1/2) - (23/50)</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">7.2 / (1/25)</gadget>
<output>180</output>

<result>180</result>