A car drives from place A to place B at a speed of 50 km/h. After driving for 3 hours, half of the journey is still 25 kilometers away. How many kilometers are there between places A and B?
一辆汽车从甲地开往乙地，速度是50千米/时，行了3小时，离全程的一半还有25千米，甲乙两地相距多少千米？
<gadget id="calculator">50 * 3</gadget>
<output>150</output>

<gadget id="calculator">150 + 25</gadget>
<output>175</output>

<gadget id="calculator">175 * 2</gadget>
<output>350</output>

<result>350</result>