In order to encourage saving electricity, Danba Electric Power Company stipulates the following calculation method of electricity charges: the monthly electricity consumption does not exceed 100 kWh, and it is charged at 0.38 yuan per kWh; Yuan fee. Zhuoma's family used 123 kWh of electricity in April, how much is the electricity bill?
为鼓励节约用电，丹巴电力公司规定了以下的电费计算方法：每月用电不超过100千瓦时，按每千瓦时0.38元收费，每月超过100千瓦时，超出部分按每千瓦时0.6元收费．卓玛家四月份用电123千瓦时，应付电费多少元？
<gadget id="calculator">100 * 0.38</gadget>
<output>38</output>

<gadget id="calculator">123 - 100</gadget>
<output>23</output>

<gadget id="calculator">23 * 0.6</gadget>
<output>13.8</output>

<gadget id="calculator">38 + 13.8</gadget>
<output>51.8</output>

<result>51.8</result>