The price of natural gas for residential users in a certain city: 2.25 yuan per cubic meter per household within 50cm**3 per month; 2.93 yuan per household over 50cm**3 per month, and the excess part is 2.93 yuan. 80cm**3, how much does Uncle Zhang pay?
某市住宅用户天然气售价：每户每月50cm**3以内，每立方米2.25元；每户每月超过50cm**3，超出部分2.93元，张叔叔用IC卡购买天然气，一次购买了80cm**3，张叔叔应付多少元？
<gadget id="calculator">2.25 * 50</gadget>
<output>112.5</output>

<gadget id="calculator">80 - 50</gadget>
<output>30</output>

<gadget id="calculator">2.93 * 30</gadget>
<output>87.9</output>

<gadget id="calculator">112.5 + 87.9</gadget>
<output>200.4</output>

<result>200.4</result>