A kind of salt water is made up of salt and water in a ratio of 1:11. To make 24 kg of this salt water, how many kg of salt are needed? (solution ratio)
一种盐水是用盐和水按1：11的比例配成的，要配成这种盐水24kg，需要盐多少kg？(解比例)
<gadget id="calculator">1 + 11</gadget>
<output>12</output>

<gadget id="calculator">24 / 12</gadget>
<output>2</output>

<result>2</result>