The taxi fare standard in a certain city is 6 yuan within 3 kilometers, and 1.5 yuan for every kilometer beyond 3 kilometers (if it is less than 1 kilometer, it will be calculated as 1 kilometer). Teacher Wan’s distance from home to school is 7.5 kilometers. How much should I pay by taxi?
某市出租车收费标准是3千米以内收6元，3千米以外每千米另收1.5元(不足1千米的按1千米计算)，万老师从家到学校有7.5千米，乘出租车应付多少钱？
<gadget id="calculator">5 * 1.5</gadget>
<output>7.5</output>

<gadget id="calculator">7.5 + 6</gadget>
<output>13.5</output>

<result>13.5</result>