i have the data in word 2013. first i convert the column in excel to text and than copy the whole in word and paste it in excel.
The following works for me in Excel 2020, assuming the MSWord text is unstructured. That is, it is just plain text in an MSWord doc.
See the image below.
1. Select and copy the column of text in MSWord.
2. In Excel, format the destination columns or cells as Text.
3. Select the first target cell, right-click, and click Paste Options: Match Destination Formatting.
(Note: That might also work for structured MSWord data; that is, the data is in a table object. I just didn't try it.)
Column A shows the result after copy-and-paste-match-format into A2.
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PS.... Even though the data appears as text with no loss of accuracy, you still cannot reference the cells in an arithmetic expression with any expectation of retaining that accuracy.
Whenever Excel interprets text as a number, it only interprets the first 15 significant digits, replacing any digits to the right with zeros.