total of 432 primary school students, middle school students and college students participated in the National Day Gala, and the ratio of their numbers was 4:3:2. How many primary school students are there in the party? How many
有小学生、中学生和大学生共432人参加国庆联欢晚会，他们的人数的比是4：3：2．问参加联欢会的小学生有多少人？多少
<gadget id="calculator">4 + 3 + 2</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">432 * (4/9)</gadget>
<output>192</output>

<result>192</result>