1, open the WPS table.
2. After opening WPS, press Alt+= under the data to get the sum formula Sun.
3. After getting the summation formula, press enter to get the sum.
4. Or select the cell directly.
5. Press Alt+= to get the sum directly.
∑ is a summation symbol, and its English name is Yima, and its Chinese name is Yima (capital σ, lowercase σ).
The eighteenth Greek letter. In Greek, if the last letter of a word is lowercase sigma, what should it be written as? This letter is also called final sigma(Unicode: U+03C2). In modern Greece, this number stands for 6.