The billing method of a taxi in an urban area is: 5 yuan for the starting mileage within 3 kilometers (including 3 kilometers); 1.50 yuan for each additional kilometer in the future. Paying the fare of 9.50 yuan, how many kilometers is his home from the gas company?
某市区出租车计费办法是：起步里程3千米以内(含3千米)收费5元；以后每增加1千米收费1.50元，王叔叔从家出发到燃气公司办事，乘出租车共付车费9.50元，他家离燃气公司有多少千米的路程？
<gadget id="calculator">9.5 - 5</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 / 1.5</gadget>
<output>3</output>

<gadget id="calculator">3 + 3</gadget>
<output>6</output>

<result>6</result>