There are 240 students in the sixth grade of Guangming Primary School. In a mathematics unit test, 10% of the students are below good, how many students are above good?
光明小学六年级共有240名学生．在一次数学单元测试中，有10%的同学在良好以下，良好以上的同学一共有多少人？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">240 * (9/10)</gadget>
<output>216</output>

<result>216</result>