car drives from place A to place B. It travels 90 kilometers in the first 2 hours, and travels 48 kilometers in the third hour to reach place B. What is the average speed of the car in km/h.
一辆汽车从甲地开往乙地，前2小时行了90千米，第3小时行了48千米到达乙地．汽车的平均速度是多少千米/时．
<gadget id="calculator">90 * 2</gadget>
<output>180</output>

<gadget id="calculator">180 + 48</gadget>
<output>228</output>

<gadget id="calculator">228 / 3</gadget>
<output>76</output>

<result>76</result>