Two people, A and B, ride towards each other from two places at the same time. A travels 18 kilometers per hour, and B travels 15 kilometers per hour. When they meet, they are 3 kilometers away from the midpoint. How many kilometers is the distance between the two places?
甲、乙两人同时从两地骑车相向而行，甲每小时行18千米，乙每小时行15千米，两人相遇时距中点3千米，求两地距离多少千米？
<gadget id="calculator">18 + 15</gadget>
<output>33</output>

<gadget id="calculator">18 - 15</gadget>
<output>3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 * (2/3)</gadget>
<output>2</output>

<gadget id="calculator">33 * 2</gadget>
<output>66</output>

<result>66</result>