The workbook.xls file is generated by the Java code referenced. The PMT calculation works correctly in the workbook.
workbook.xls (application/, 4.00 KB, created by Keith Bennett on 2008-03-27 07:54:18 UTC
Creator: Keith Bennett
Created: 2008-03-27 07:54:18 UTC
Size: 4.00 KB

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Attachments on bug 44691: 21721