The school cafeteria brought back a batch of grain, of which rice accounted for (3/4) of the total grain, and after eating 36 kg of rice, the remaining rice accounted for (3/5) of the total grain. How many kilograms is this batch of grain?
学校食堂运回一批粮食，其中大米占粮食总量的(3/4)，当吃了36千克大米后，剩下的大米占粮食总量的(3/5)．这批粮食共多少千克？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/4) - (3/5)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">36 / (3/20)</gadget>
<output>240</output>

<result>240</result>