The school carried out water conservation activities, saving a total of 408 tons of water in the first three months. According to this calculation, how many tons of water can the school save a year?
学校开展节约用水活动，前3个月共节约用水408吨．照这样计算，学校一年能节约用水多少吨？
<gadget id="calculator">408 / 3</gadget>
<output>136</output>

<gadget id="calculator">136 * 12</gadget>
<output>1_632</output>

<result>1_632</result>