A school uses 36 tons of water in September, the water consumption in October is September (8/9), and the water consumption in November is October (7/8). How many tons of water is used in November?
某校九月份用水36吨，十月份用水量是九月份的(8/9)，十一月份用水量是十月份的(7/8)．十一月份用水多少吨？
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">36 * (8/9) * (7/8)</gadget>
<output>28</output>

<result>28</result>