The starting price of taxis in Nanjing is 8 yuan (within 3 kilometers), and the average fare is 2 yuan per kilometer for more than 3 kilometers. Wang Jun paid 22 yuan for the bus from his home to Zhongyangmen shopping mall. How far is Wang Jun's home from Zhongyangmen Mall?
南京市出租车的起步价为8元(3千米以内)，超过3千米，平均每千米收费2元．王军从家去中央门商场付车费22元．王军家离中央门商场有多远？
<gadget id="calculator">22 - 8</gadget>
<output>14</output>

<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<gadget id="calculator">7 + 3</gadget>
<output>10</output>

<result>10</result>