The passenger ship and the cargo ship depart from the two ports of A and B at the same time. The passenger ship travels 30 kilometers per hour; the cargo ship travels 12.5% of the whole journey per hour. When the passenger ship is 150 kilometers away from A port, the cargo ship is exactly 120 kilometers away from B port. How many kilometers are there between the two ports of A and B?
客船和货船分别从甲乙两港同时相对开出，客船每小时行30千米；货船每小时行全程的12.5%，当客船距甲港150千米时，货船正好距乙港120千米．甲乙两港相距多少千米？
<gadget id="calculator">150 / 30</gadget>
<output>5</output>

<gadget id="calculator">12.5 / 100</gadget>
<output>0.125</output>

<gadget id="calculator">120 / 5 / 0.125</gadget>
<output>192</output>

<result>192</result>