Hank, someone would need to know that you own X% of tract Y @ W royalty and tract Y is Z% of the total well either on an acreage or on a lateral foot basis….to tell you if anything makes sense.
Right now it seems you are saying that your minerals are 41.6% of a tract. Let’s say hypothetically that is correct. Maybe you are leased at 25% royalty, and your tract is 5% of the well length or total acreage.
.416 times .25 times .050 = .00520833. That’s one possible way somebody gets to that decimal.
It is unclear to me what “pipe spacing” means in this context. It might be easiest to call the operator and ask them to explain it to you.