Wang Ru learned from social practice that a processing plant in our city used to use 468 tons of water per month. Through the use of water-saving technology, the original annual water consumption can now be used for an extra month. How many tons of water can this factory save per month compared with the original?
王茹在社会实践中了解到，我市某加工厂原来每月用水468吨，通过采用节水技术，原来一年的用水量，现在可以多用一个月．现在这个工厂每月比原来可节约用水多少吨？
<gadget id="calculator">12 / 13</gadget>
<output>12/13 = around 0.923077</output>

<gadget id="calculator">468 * (12/13)</gadget>
<output>432</output>

<gadget id="calculator">468 - 432</gadget>
<output>36</output>

<result>36</result>