The charge for calls in our city is stipulated as follows: a total of 0.2 yuan is charged for the first 3 minutes, and 0.1 yuan is charged for each additional minute (less than 1 minute is charged as 1 minute). Xiaohua called Dad for 8 minutes and 14 seconds How much is the phone bill for local calls?
我市市内通话的收费是这样规定的：前3分钟内共收费0.2元，以后每超过1分钟(不足1分钟按1分钟计费)收0.1元，小华给爸爸打了8分14秒的市内电话，需要多少电话费？
<gadget id="calculator">1 - 3</gadget>
<output>-2</output>

<gadget id="calculator">8 + (-2)</gadget>
<output>6</output>

<gadget id="calculator">6 * 0.1</gadget>
<output>0.6</output>

<gadget id="calculator">0.2 + 0.6</gadget>
<output>0.8</output>

<result>0.8</result>