How do I export a specific set of rows from Numbers?

Question

What i am looking to be able to do is
Export a specific set of rows from Numbers
I am working with large files of information
but would like to break the file up into smaller files
for example
I have 1 file with 40,000 rows
I need to be able to export/save this file into 4 smaller files
Rows 1-10,000
Rows 10,001-20,000
Rows 20,001-30,000
Rows 30,001-40,000

Answer 1

I do not think I would use Numbers for this task.
I would duplicate the file (let's say the name is data.txt)
and name the two files:
dataA.txt
dataC.txt
then I would open dataA.txt in TextEdit and delete the last half of the file and save
then I would open dataC.txt in TextEdit and delete the first half of the file and save
then duplicate dataA.txt and name the new file dataB.txt
then duplicate dataC.txt and name the new file dataD.txt
Now open dataA.txt and delete the last half of the file, save
Now open dataB.txt and delete the first half of the file, save
Now open dataC.txt and delete the last half of the file, save
Now open dataD.txt and delete the first half of the file, save
if you did this very often I would suggest a script of some kind