The text strings like the ones in the examples are the only text strings that needs to be converted, all other text strings need not be converted and can be ignored. Also, we're only talking about a max of 250 lines of these text strings that need to be converted per sheet.

The result (numbers) of the conversion needs to go directly below the text string that is being converted. See below.

2113456 - 2113460
2113456
2113457
2113458
2113459
2113460