No I definitely understand.
DXM is not dangerous at those doses, especially during a one time dose.
The 0.1/100 would mean the odds of dying when using DXM are 1/1,000; 0.01 would be 1/10,000 and 0.001 would be 1/100,000.
If you use responsibly the only way you will die is from unforseen adverse reactions such as a genetically weak heart but things that are very very rare.
DXM is not a readily dangerous substance if you know what you're doing; again do not combine it with any other drugs for your first time and realize that SSRI medications can have adverse reactions with DXM.
As well your dosage is kind of high but not ridiculously high.