Xiao Ming uses a measuring cup with a capacity of 200ml to measure the capacity of a bottle. He fills the measuring cup with water and pours it into the bottle. It is not filled until the fifth time. At this time, there is still 150ml of water in the measuring cup. What is the capacity of this bottle in milliliters?
小明用一个容量是200毫升的量杯测量一个瓶子的容量，他将量杯装满水倒入瓶中，倒第五次时才倒满，这时量杯中还有150毫升的水．这个瓶子的容量是多少毫升？
<gadget id="calculator">200 * 4</gadget>
<output>800</output>

<gadget id="calculator">200 - 150</gadget>
<output>50</output>

<gadget id="calculator">800 + 50</gadget>
<output>850</output>

<result>850</result>