$ perl -E 'my $s="ME170-5/2/8-ME172-2/2/6-ME4028"; while ($s=~m|(\d{1,
+2})/(\d{1,2})/(\d{1,2})|g){++$x;say "$x Found $1-$2-$3:" . pos($s)}'

##</code><code>##

$ perl -E 'my $s="ME170-5/2/8-ME172-2/2/6-ME4028"; while ($s=~m|(\d{1,
+2}/\d{1,2}/\d{1,2})|g){++$x;say "$x Found $1:" . (index($s,$1)+1)}'