Wang Peng’s family paid a total of 504 yuan for water and electricity in the first and second quarters. What is the average monthly water and electricity expenditure of his family?
王鹏家第一、二季度共交水电费504元，他家平均每月的水电费支出是多少元．
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">504 / 6</gadget>
<output>84</output>

<result>84</result>