my $Number = '!56';
if ( $Number =~ /\d*[05]/ ) {
    say "$Number is divisible by 5.";
    warn 'Really?';
}
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A dollar sign missing somewhere at least.

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,
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