There are 750 students in Huayang Primary School, and the attendance rate on a certain day is 99.6%. How many students are absent on this day?
华阳小学有750名学生，某天的出勤率是99.6%，这一天有多少学生缺勤？
<gadget id="calculator">99.6 / 100</gadget>
<output>0.996</output>

<gadget id="calculator">1 - 0.996</gadget>
<output>0.004</output>

<gadget id="calculator">750 * 0.004</gadget>
<output>3</output>

<result>3</result>