I think JavaFan had it right but I didn't notice, since his reply didn't have code, till I wrote some. So…

while ( <DATA> )
{
    chomp;
    my ( $first, $second ) = split;
    print
        "$first:$second --> ",
        multiple($first,$second) ? "yes" : "no",
        "\n";
}

sub multiple {
    my ( $one, $two ) = @_;
    ! ( $one > $two ? $one % $two : $two % $one );
}

__DATA__
1 2
2 3
3 9
9 3
11 7
2 108
4 4
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