The school carried out water saving activities, saving a total of 75 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75吨．照这样计算，学校一年能节约用水多少吨？
<gadget id="calculator">75 / 3</gadget>
<output>25</output>

<gadget id="calculator">25 * 12</gadget>
<output>300</output>

<result>300</result>