This might be close? 

while(<DATA>) {
    s[(..)/(../..)][$2/$1];
    print;
}

[download]

..and remember there are a lot of things monks are supposed to be but lazy is not one of them

Examine what is said, not who speaks.
1) When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.
2) The only way of discovering the limits of the possible is to venture a little way past them into the impossible
3) Any sufficiently advanced technology is indistinguishable from magic.
Arthur C. Clarke.

In reply to Re: Manipulating Date Numbers by BrowserUk
in thread Manipulating Date Numbers by ellem

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