1. The problem is unclear as it states "the data I copy change in word." It seems you are experiencing an issue where copied data changes when pasted into Microsoft Word. 2. This is not a math problem but a software usage issue. Common reasons for data changing when copying to Word include formatting differences, automatic corrections, or clipboard issues. 3. To address this, try pasting as plain text using Ctrl+Shift+V or right-click and select "Paste Special" then "Unformatted Text." This prevents Word from applying its own formatting. 4. If you want to keep the original formatting, ensure the source and Word use compatible fonts and styles. 5. If you want help with a math or programming problem, please provide the specific question or data.