Hi Guys, I'm very new to perl. I was just doing some read/write operations in excel sheet using perl. My issue is: When i write a decimal number (fraction number. Ex : 2.5), and read it back, the output is some long number with extra decimals. I dont know why this is happening. Please help me

use Spreadsheet::ParseExcel;
use Spreadsheet::ParseExcel::SaveParser;

## Write to an existing excel sheet
    $parser   = Spreadsheet::ParseExcel::SaveParser->new();
    my $workbook = $parser->Parse('myxls.xls');
    # Get the first worksheet.
    my $worksheet = $workbook->worksheet("myxls");
    my ( $row_min, $row_max ) = $worksheet->row_range();
    my ( $col_min, $col_max ) = $worksheet->col_range();

    $worksheet->AddCell( $row_max+1,  0, '10.1'      );
    $worksheet->AddCell( $row_max+1,  1, '10.2'      );
    $worksheet->AddCell( $row_max+1,  2, '10.3'      );
    $worksheet->AddCell( $row_max+1,  3, '10.4'      );
    $worksheet->AddCell( $row_max+1,  4, '10.5'      );
    $worksheet->AddCell( $row_max+1,  5, '10.6'      );
    $worksheet->AddCell( $row_max+1,  6, '10.7'      );
    $worksheet->AddCell( $row_max+1,  7, '10.8'      );
    $worksheet->AddCell( $row_max+1,  8, '10.9'      );
              
    $workbook->SaveAs('myxls.xls');
    
## Excel Read
    $parser   = Spreadsheet::ParseExcel::SaveParser->new();
    my $workbook = $parser->Parse('myxls.xls');
    # Get the first worksheet.
    my $worksheet = $workbook->worksheet("myxls");
    my ( $row_min, $row_max ) = $worksheet->row_range();
    my ( $col_min, $col_max ) = $worksheet->col_range();
    for($r=$row_min; $r<=$row_max; $r++){
        for($c=$col_min; $c<=$col_max; $c++){
           $d = $worksheet->get_cell( $r, $c); if(defined $d) { $d= $d
+->unformatted(); print "-$d-\t";}
        }
        print "\n";
    }
[download]

Result : -10.0999999999999996- -10.1999999999999993- -10.3000000000000007- -10.4000000000000004- -10.5- -10.5999999999999996- -10.6999999999999993- -10.8000000000000007- -10.9000000000000004- I don't understand why this extra decimal numbers. When i open excel and check, this extra decimals are not there. Please help me