Disinfectant alcohol is made from pure alcohol and distilled water, the ratio of pure alcohol to distilled water is 3:1. How many liters of disinfectant alcohol can be prepared with 8 liters of distilled water?
消毒酒精是由纯酒精和蒸馏水配制而成的，纯酒精与蒸馏水的比是3：1．用8升蒸馏水，可配制消毒酒精多少升？
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">8 / (1/4)</gadget>
<output>32</output>

<result>32</result>