Python / Regex - 扩展括号和斜杠

I'm looking for a way to expand numbers that are separated by slashes. In addition to the slashes, parentheses, may be used around some (or all) numbers to indicate a "group" which may be repeated (by the number of times directly following the parentheses) or repeated in reverse (followed by 's' as shown in the second set of examples). Some examples are:I'm looking for a way to expand numbers that ar