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Add the values in a column or row by using a button. You can use AutoSum to quickly sum a range of numbers in a column or row. Click an empty cell below a column of numbers or to the right of a row of numbers, and then click AutoSum. Excel selects what it determines to be the most likely range of data.
Dividing Numbers in Excel. To divide two numbers in Excel you need to create a formula. Important points to remember about Excel formulas 1  : formulas in Excel always begin with the equal sign 2  (=). the equal sign always goes in the cell where you want the answer to go. 3  the division symbol is the forward slash (/).ividing Numbers in Excel. To divide two numbers in Excel you need to create a formula. Important points to remember about Excel formulas 1  : formulas in Excel always begin with the equal sign 2  (=). the equal sign always goes in the cell where you want the answer to go. 3  the division symbol is the forward slash (/).