I got down to 98: 

sub bowl {
    $_=pop;
    s#(\d)(\d|(/))(?=(.))|X(?=(..))|.#$3.$5?"X$4$5":$1.$2#ge;
    s#./#X#g;
    map{(y.X.a.)x hex}split//
}

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        - tye (but my friends call me "Tye")

In reply to (tye)Re2: (Golf) Let's go bowling (98!) by tye
in thread (Golf) Let's go bowling by virtualsue

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