The school carried out the activity of "Energy Conservation and Emission Reduction, Everyone Takes Action". A total of 390 tons of water was saved in the first three months. According to this calculation, how many tons of water can the school save in a year?
学校开展"节能减排，大家行动"活动．前3个月共节约用水390吨，照这样计算，学校一年能节约用水多少吨？
<gadget id="calculator">390 / 3</gadget>
<output>130</output>

<gadget id="calculator">130 * 12</gadget>
<output>1_560</output>

<result>1_560</result>