The DO can have a 0.01 but it is unusual. Might be an ORRI amount. Those were given to a geologist or landman who helped cut the deal. Sometimes, they end up being 0.01.
The equation for a division order decimal in OK is net acres/actual spacing acres x royalty x percentage of perforations. Example: 10 net mineral acres, spacing 640 acres at 1/5th and a horizontal well with 50% perforations in your section. 10/640 x .20 x .50=0.0015625.
Lease offers usually come with several options each with a different bonus. The higher royalty will have a lower bonus. Most of us would prefer the higher royalty. Over time, the higher royalty from a successful well or wells for MANY YEARS far outweighs the ONE time bonus from a lower royalty.
It is extremely important to keep a record of your decimal amounts for each well. As wells get sold to new operators, you need to make sure that your records stay correct.
Yes you can find out the components. The decimal is listed on the check statement, so easy to find. You need have good records which have your net mineral acres, the spacing and the perforation percents. If the well is conventional, then usually the perforation number is 1.00. If you have horizontals, then the percentage is usually listed on the Division Order. You can ask the Division Order analyst for your net acres, royalty and spacing but that can take weeks to get the answers back. You can find the spacing on the OK well records site fairly quickly. Often on the completion report. The original lease states the royalty. Be careful as the lease states the gross acreage, not the net acreage. If you have all of the other parts of the equation, you can back out the net acreage.
I keep a list of all of my wells by state, county, township, range and section (or block, abstract name and number and section for TX). I have columns for all pertinent information. I can send you a template to get you started.