The two containers A and B can hold 1 liter of water in total. It is known that the capacity of container A is 4 times that of B. What is the capacity of container B in milliliters?
甲、乙两个容器一共可盛l升水，已知甲容器的容量是乙的4倍，乙容器的容量是多少毫升．
<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">1_000 / 5</gadget>
<output>200</output>

<gadget id="calculator">1 * 200</gadget>
<output>200</output>

<result>200</result>