There are 228 male students and 199 female students in the third grade of Hope Primary School. How many students do you hope there are in the third grade of elementary school?
希望小学三年级有男学生228人，女学生199人．希望小学三年级有学生多少人？
<gadget id="calculator">228 + 199</gadget>
<output>427</output>

<result>427</result>