A car traveling at a speed of 50 kilometers per hour departs from A at 10:00 am and arrives at B at 5:00 pm. How many kilometers are there between A and B?
一辆汽车以每时50千米的速度行驶，上午10时从甲地出发，下午5时到达乙地．甲、乙两地相距多少千米？
<gadget id="calculator">17 - 10</gadget>
<output>7</output>

<gadget id="calculator">50 * 7</gadget>
<output>350</output>

<result>350</result>