We can determine the solution via algebraic expression. Let's say the total number made is "x". A certain number are used in product testing and as such can not be sold because they are used, we'll call those "u". Now some end up as rejects for QC reasons we'll that number "q". Some have been known to fall off the delivery truck in transit, because trucks have faulty tailgates and tie-downs can break, we'll call that number "t". Trade shows come along and door prizes ensue, therefore a certain number are given away for free, call that number "f". So, to answer the question, "How many BK-11's CSM's are there?" Assuming an availability quotient to the general public of "M" versus the actual gross national product of BK-111 CSM's total "m", we arrive at function
x-(u+q+t+f)+(M/m)= :monkey: