A passenger car travels from A to B at an average of 55 kilometers per hour, and after 4 hours it exceeds the midpoint by 25 kilometers. How many kilometers are the distance between the two places?
一辆客车从甲地开往乙地，平均每小时行55千米，4小时后超过中点25千米．两地相距多少千米？
<gadget id="calculator">55 * 4</gadget>
<output>220</output>

<gadget id="calculator">220 - 25</gadget>
<output>195</output>

<gadget id="calculator">195 * 2</gadget>
<output>390</output>

<result>390</result>