In June and July last year, Xiaoming’s house used an average of 18 kWh of electricity per day. How many kWh did they use in these two months?
小明家去年六月和七月平均每天用电18千瓦时，这两个月一共用电多少千瓦时？
<gadget id="calculator">30 + 31</gadget>
<output>61</output>

<gadget id="calculator">18 * 61</gadget>
<output>1_098</output>

<result>1_098</result>