A bottle of oil, pour it (1/4) into a glass weighing 200 grams, put the glass on one pan of the balance, and then put a weight of 500 grams on the other pan of the balance, this When the balance is balanced. How many grams does this bottle of oil weigh?
一瓶油，将它的(1/4)倒入一个重200克的玻璃杯里，再把杯放在天平的一个盘里，然后在天平的另一个盘中放人500克砝码，这时天平就平衡了．这瓶油重多少克．
<gadget id="calculator">500 - 200</gadget>
<output>300</output>

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

<gadget id="calculator">300 / (1/4)</gadget>
<output>1_200</output>

<result>1_200</result>