In order to encourage saving electricity consumption, a power company in a certain city adopts the method of charging electricity bills in sections on a monthly basis. 0.68 yuan per kwh within 50 kwh, and 0.98 yuan per kwh for the part exceeding 50 kwh. Xiaowei's family used 85 kWh of electricity in June, how much should I pay for electricity?
某市电力公司为鼓励节约用电，采取按月分段计费的方法收取电费．50千瓦时以内的每千瓦时0.68元，超过50千瓦时的部分，每千瓦时0.98元．小伟家6月份用电85千瓦时，应缴电费多少元？
<gadget id="calculator">50 * 0.68</gadget>
<output>34</output>

<gadget id="calculator">85 - 50</gadget>
<output>35</output>

<gadget id="calculator">35 * 0.98</gadget>
<output>34.3</output>

<gadget id="calculator">34 + 34.3</gadget>
<output>68.3</output>

<result>68.3</result>