There are 9 liters of alcohol, which need to be filled in bottles of the same size. It is known that 6 bottles can hold 1.5 liters. How many such bottles are needed to fill all the alcohol?
有9升酒精，要用同样大小的瓶子来装，已知6个瓶子可装1.5升，要分装完所有的酒精，需要这样的瓶子多少个？
<gadget id="calculator">1.5 / 6</gadget>
<output>0.25</output>

<gadget id="calculator">9 / 0.25</gadget>
<output>36</output>

<result>36</result>