To configure a potion, the ratio of the volume of the potion to the volume of water is 3:22. Now there are 270 ml of medicine, how many liters of medicine can be prepared.
要配置一种药水，药剂的体积与水的体积比是3：22．现在有270毫升的药剂，可以配制出多少升的药水．
<gadget id="calculator">270 / 1_000</gadget>
<output>27/100 = around 0.27</output>

<gadget id="calculator">3 + 22</gadget>
<output>25</output>

<gadget id="calculator">3 / 25</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">(27/100) / (3/25)</gadget>
<output>9/4 = around 2.25</output>

<result>9/4 = around 2.25</result>