jQuery doesn't support regular expressions as selectors by default. There are some filters that could do that.
What you can do instead is use the jQuery filter() method.
$('div').filter(function() {
return this.id.match(/^drop_\d+_\d+_1$/);
}).html("match");
This will basically check all the divs in your document and use the filter() method to see if it should match or not.
I imagine this will not be the fastest way of doing, you could try to restrict the search as much as possible (e.g. $('div', container_of_divs)), but by the looks of what you're trying to parse, it seems result is more important than speed.
As a note, your regular expression is wrong too.
drop_*_*_1 translates to something like:
drop followed by
_ zero or more times,
_ zero or more times,
_1
Which would match something like drop_1 or drop__1 or drop___..._1.
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