From January to March this year, Xiaogang’s family shared 990 kW/h of electricity. How much electricity does Xiaogang’s family use on average every day?
小刚家今年1～3月份共用电990千瓦/时，小刚家平均每天用电多少千瓦/时？
<gadget id="calculator">31 + 28 + 31</gadget>
<output>90</output>

<gadget id="calculator">990 / 90</gadget>
<output>11</output>

<result>11</result>