This will bring up the Formula dialog with a default of SUM LEFT. Unfortunately this formula would simply add all the numbers to the left of the cell ie. To create your own select Design Equation Ink Equation.
Instead you need to create a custom function to convert the number into words yourself.
SEARCHmarket supermarket returns 6 because the substring market begins at the 6 th character of the word supermarket. Youll see this on the far right in the Symbols group. Unlike FIND the SEARCH function is case-insensitive and it allows using the wildcard characters as demonstrated in the following example. Select the equation you want to add.