let
Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Split Column by Delimiter" = Table.SplitColumn(Source, "Column1", Splitter.SplitTextByDelimiter("-", QuoteStyle.Csv), {"Column1.1", "Column1.2"}),
#"Changed Type" = Table.TransformColumnTypes(#"Split Column by Delimiter",{{"Column1.1", Int64.Type}, {"Column1.2", Int64.Type}}),
#"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each {[Column1.1]..[Column1.2]}),
#"Expanded Custom" = Table.ExpandListColumn(#"Added Custom", "Custom"),
#"Removed Other Columns" = Table.SelectColumns(#"Expanded Custom",{"Custom"})
in
#"Removed Other Columns"