In the second quarter of the third grade of Yulong Primary School, the average electricity consumption is 30 degrees per month. According to this calculation, how many degrees of electricity will be shared in the fourth quarter.
雨龙小学三年级第二季度用电平均每月30度，照这样计算，第四季度共用电多少度度．
<gadget id="calculator">30 * 3</gadget>
<output>90</output>

<result>90</result>