In the charity donation activity, the ratio of donations from Xiaolan, Xiaoming, and Xiaoliang was 6:5:3. Xiaolan donated 9 yuan more than Xiaoliang. How much did Xiaoming donate?
在献爱心捐款活动中，小兰、小明、小亮三人所捐钱数的比是6：5：3，小兰比小亮多捐了9元，小明捐了多少元？
<gadget id="calculator">6 - 3</gadget>
<output>3</output>

<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<result>15</result>