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XLS File (What It Is & How to Open One) - Lifewire
Free Online Spreadsheet Software: Excel | Microsoft 365
XLS File - What is an .xls file and how do I open it? - FileInfo.com
How to Open an XLS File Step by Step - Learn Excel
6 Ways to Open XLS and XLSX Files for Free - MUO
File formats that are supported in Excel - Microsoft Support
Excel File Extensions: XLSX, XLSM, XLS, XLTX, and XLTM - Lifewire
What Is an XLS File? And How to Use It? | Layer Blog
.XLS Files - What They Are and How to View and Open One | Adobe
4 Ways to Open Excel Files - wikiHow