There are 500 students in the school, and today's attendance rate is 98%. How many people are absent?
学校共有学生500人，今天的出勤率是98%，问有几人缺席？
<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">500 * (49/50)</gadget>
<output>490</output>

<gadget id="calculator">500 - 490</gadget>
<output>10</output>

<result>10</result>