The weight ratio of Li Dong, Wang Jun and Zhang Xin is 3:4:5. Their average weight is 32 kg. What is Li Dong's weight in kg?
李东、王俊、张欣三人体重比是3：4：5，他们的平均体重是32千克，李东的体重是多少千克．
<gadget id="calculator">3 + 4 + 5</gadget>
<output>12</output>

<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">96 * (1/4)</gadget>
<output>24</output>

<result>24</result>