From 10:00 a.m. to 2:00 p.m., a small foreign devil car traveled a total of 200 kilometers. How many kilometers per hour did the car travel on average?
一辆小洋鬼子车从上午10时到下午2时，共行驶了200千米，这辆小汽车平均每小时行驶了多少千米？
<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<gadget id="calculator">2 + 2</gadget>
<output>4</output>

<gadget id="calculator">200 / 4</gadget>
<output>50</output>

<result>50</result>