There are 200 students in the sixth grade. The passing rate of a math test is 98%. How many people fail?
六年级年级学生200人，一次数学测试的及格率为98%，不及格多少人．
<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">200 * (49/50)</gadget>
<output>196</output>

<gadget id="calculator">200 - 196</gadget>
<output>4</output>

<result>4</result>