There are five classes in Grade 6. The number of students in Class 1 to Class 5 is 43, 40, 41, 44, 42. The school auditorium has 200 seats. If the graduation ceremony of Grade 6 is held, do I need to add chairs?
六年级有五个班一至五班的人数依次为43、40、41、44、42，学校小礼堂有200个座位，如果召开六年级毕业典礼需要加椅子吗？
<gadget id="calculator">43 + 40 + 41 + 44 + 42</gadget>
<output>210</output>

<gadget id="calculator">210 - 200</gadget>
<output>10</output>

<result>10</result>