The starting fare of a taxi in Chongqing is 10 yuan (within 3 kilometers), and if it exceeds 3 kilometers, the excess part will be calculated at 2.2 yuan per kilometer. Uncle Wang’s home is 7.5 kilometers away from Jiefangbei. How much does he need to pay by taxi from his home to Jiefangbei?
重庆市出租车起步价为10元(3千米及以内)，超过3千米，超出部分按每千米2.2元计算．王叔叔家到解放碑有7.5千米，他乘出租车从家到解放碑需付车费多少元？
<gadget id="calculator">7.5 - 3</gadget>
<output>4.5</output>

<gadget id="calculator">2.2 * 4.5</gadget>
<output>9.9</output>

<gadget id="calculator">9.9 + 10</gadget>
<output>19.9</output>

<result>19.9</result>