There is a beverage bottle with a volume of 1.5 liters. Now it contains some beverages. The height of the beverage is 15 cm when it is upright, and the height of the empty part is 5 cm when it is upside down. How many liters of beverages are in the bottle?
有一饮料瓶的容积是1.5升，现在它里面装有一些饮料，正放时饮料高度是15厘米，倒放时空余部分高度为5厘米，问瓶内现有饮料多少升？
<gadget id="calculator">15 + 5</gadget>
<output>20</output>

<gadget id="calculator">1_000 / 20</gadget>
<output>50</output>

<gadget id="calculator">15 / 1_000</gadget>
<output>3/200 = around 0.015</output>

<gadget id="calculator">1.5 * 50 * (3/200)</gadget>
<output>1.125</output>

<result>1.125</result>