Xiaopang’s family paid 155.7 yuan for electricity in March, 23.8 yuan for water, and 230 yuan for water, electricity and gas in March. How much did Xiaopang’s family pay for gas in March?
小胖家三月份付电费155.7元，付水费23.8元，三月份付水、电和燃气费共230元，小胖家三月份付燃气费多少元？
<gadget id="calculator">230 - 155.7 - 23.8</gadget>
<output>50.5</output>

<result>50.5</result>