car drives from place A to place B at 75 kilometers per hour. After 4 hours, it is still 6 kilometers away from the midpoint. How many kilometers away is this car from place B?
一辆汽车从甲地开往乙地，每小时行75千米，经过4小时候，距离中点还有6千米，这时这辆汽车距乙地还有多少千米？
<gadget id="calculator">75 * 4</gadget>
<output>300</output>

<gadget id="calculator">300 + 6 + 6</gadget>
<output>312</output>

<result>312</result>