Xiaoming's family used to pay an average of 137 yuan per month for electricity. After installing the solar water heater, they paid a total of 576 yuan for electricity in the second half of this year. How much is the average monthly electricity saving?
小明家从前平均每月交电费137元，安装太阳能热水器后，今年下半年6个月共交电费576元，平均每月节约电费多少元？
<gadget id="calculator">576 / 6</gadget>
<output>96</output>

<gadget id="calculator">137 - 96</gadget>
<output>41</output>

<result>41</result>