The school is going to use peracetic acid for disinfection to prevent SARS. It is known that the ratio of medicine to water is 1:200. Now it needs to prepare 241.2 kg of liquid medicine. How many kilograms of peracetic acid should be prepared.
学校防"非典"准备用过氧乙酸进行消毒，已知药和水的比是1：200，现需要配制药水241.2千克，需准备过氧乙酸多少千克．
<gadget id="calculator">1 + 200</gadget>
<output>201</output>

<gadget id="calculator">1 / 201</gadget>
<output>1/201 = around 0.004975</output>

<gadget id="calculator">241.2 * (1/201)</gadget>
<output>1.2</output>

<result>1.2</result>