The height of water in a cylindrical glass is half the height of the glass. After putting an iron block with a volume of 200 cm into this glass (the iron block is completely submerged in water), the height of the water rises to the height of the glass. (3/5) Department. What is the volume of the glass?
一个圆柱形玻璃杯中水的高度是玻璃杯高度的一半，往这个玻璃杯放入一个体积为200立厘米的铁块后(铁块完全浸没在水中)，水的高度上升到玻璃杯高度的(3/5)处．问玻璃杯的容积是多少？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/5) - (1/2)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">200 / (1/10)</gadget>
<output>2_000</output>

<result>2_000</result>