Huning Steel Machinery Co., Ltd. saved an average of 20 tons of water per day in the second quarter of this year, and how many tons of water was saved in total in the second quarter.
沪宁钢机有限公司今年第二季度平均每天节约用水20吨，第二季度大约共节约用水多少吨．
<gadget id="calculator">30 + 31 + 30</gadget>
<output>91</output>

<gadget id="calculator">91 * 20</gadget>
<output>1_820</output>

<result>1_820</result>