motorcycle drives from place A to place B at 8:00 in the morning, traveling 45 kilometers per hour. At the same time, a car drives from place B in the same direction, traveling at 30 kilometers per hour. Get on the car, ask how many kilometers is the distance between A and B?
一辆摩托车上午八时从甲地向乙地开出，每小时行45千米，同时有一辆汽车从乙地向同一方向开出，每小时行30千米，中午十二点摩托车追上汽车，问甲、乙两地之间的距离是多少千米？
<gadget id="calculator">45 - 30</gadget>
<output>15</output>

<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">15 * 4</gadget>
<output>60</output>

<result>60</result>