Qiqi's father wants to take a taxi to a city 33 kilometers away on business. How would you advise Kiki's dad to pay? How much money can be saved in comparison? Do the math! (The fare can be paid 80 yuan at one time according to the chartered price, or it can be billed by sections: 10 yuan for the distance within 4 kilometers, and 2.2 yuan per kilometer for the excess part.)
奇奇的爸爸要坐出租车去相距33千米的城市出差．你会建议奇奇的爸爸怎样付费？相比较可以节约多少钱？算一算！(车费可以按包车价一次性付费80元，也可以按分段计费法：4千米以内的付10元，超过4千米的，超过部分按每千米2.2元的标准付费．)
<gadget id="calculator">28 * 2.2</gadget>
<output>61.6</output>

<gadget id="calculator">61.6 + 10</gadget>
<output>71.6</output>

<gadget id="calculator">80 - 71.6</gadget>
<output>8.4</output>

<result>8.4</result>