The school clinic divides the fourth-grade students into four groups on average to check their eyesight. The students in the first and third groups all have normal eyesight, 90% of the students in the second group have normal eyesight, and (1/12) of the students in the fourth group have abnormal eyesight. ． It is known that there are 229 students with normal eyesight in the fourth grade, how many people have abnormal eyesight?
学校卫生室把四年级学生平均分成四批检查视力，第一批和第三批学生视力全部正常，第二批学生中90%视力正常，第四批学生中有(1/12)视力不正常．已知四年级学生中视力正常的共229人，视力不正常的有多少人？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) * 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(1/4) * (9/10)</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 - (1/12)</gadget>
<output>11/12 = around 0.916667</output>

<gadget id="calculator">(1/4) * (11/12)</gadget>
<output>11/48 = around 0.229167</output>

<gadget id="calculator">(1/2) + (9/40) + (11/48)</gadget>
<output>229/240 = around 0.954167</output>

<gadget id="calculator">229 / (229/240)</gadget>
<output>240</output>

<gadget id="calculator">240 - 229</gadget>
<output>11</output>

<result>11</result>