In a certain area, the eyesight of elementary school students was randomly checked, and the average number of normal eyesight among every 100 students was only 46. There are 10,000 primary school students in this area. How many people have normal vision?
某地区对小学生视力进行抽检，平均每100名学生中正常视力人数仅为46人．这个地区有小学生1万人，正常视力的人数大约是多少人？
<gadget id="calculator">10_000 / 100</gadget>
<output>100</output>

<gadget id="calculator">100 * 46</gadget>
<output>4_600</output>

<result>4_600</result>