Xiaoyan bought a bottle of orange juice and drank (3/5), which is exactly 300 ml. How many ml is the total amount of orange juice in this bottle?
小岩买了一瓶橙汁，喝了(3/5)，正好是300毫升，这瓶橙汁总量是多少毫升？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">300 / (3/5)</gadget>
<output>500</output>

<result>500</result>