A and B are walking toward each other from two places at the same time. A rides a bicycle and travels 15 kilometers per hour, and B rides a motorcycle at 45 kilometers per hour. A meets B at a distance of 30 kilometers from the starting point. How many kilometers are the distance between the two places?
甲乙两人同时从两地相向而行，甲骑自行车每小时行15千米，乙骑摩托车每小时行45千米，甲在离出发地点30千米处与乙相遇．两地相距多少千米？
<gadget id="calculator">30 / 15</gadget>
<output>2</output>

<gadget id="calculator">15 + 45</gadget>
<output>60</output>

<gadget id="calculator">2 * 60</gadget>
<output>120</output>

<result>120</result>