What should I input for the "duration on Thailand" question when applying for a visa?

In response to the question about what to input for the "duration on Thailand" on visa applications, the answers suggest various approaches: One user indicated to write under 180 days, while another mentioned that the duration is not crucial for the DTV visa; just state how long you plan to stay on your first trip, also under 180 days. Another commenter suggested filling in the maximum allowable stay per entry, which is 180 days.