The ratio of alcohol to water in a sprinkle solution is 3:11, and there is 30 kilograms of alcohol, how many kilograms of this solution can be prepared?
一种洒精溶液中酒精和水的比是3：11，现有酒精30千克，可配这种溶液多少千克？
<gadget id="calculator">3 + 11</gadget>
<output>14</output>

<gadget id="calculator">3 / 14</gadget>
<output>3/14 = around 0.214286</output>

<gadget id="calculator">30 / (3/14)</gadget>
<output>140</output>

<result>140</result>