There is a batch of rice in the school cafeteria. I ate 1/4 of this batch of rice on the first day, and 54 kg on the second day. At this time, the ratio of the rice eaten to the remaining rice is 4:3. The school cafeteria How many kilograms of rice is there?
学校食堂有一批大米，第一天吃了这批大米的(1/4)，第二天又吃了54千克，这时吃掉的大米和剩下的大米之比4：3是，学校食堂原来有大米多少千克？
<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(4/7) - (1/4)</gadget>
<output>9/28 = around 0.321429</output>

<gadget id="calculator">54 / (9/28)</gadget>
<output>168</output>

<result>168</result>