how do I figure out the calculation of 999, 822 and the date of 5/14/2015 to equal 51981220?

To figure out the calculation of 999 and 822 to equal 51981220, we can use algebraic equations. Let's denote 999 as A, 822 as B, and the result as C.

We can set up the equation: A * B = C

So, A * B = 51981220

Now, we need to solve for A and B. However, it's important to note that 999 and 822 alone cannot uniquely result in the given value of 51981220. It seems there might be an error or missing information in the calculation you provided.

Moving on to the second part of your question, you mentioned the date 5/14/2015. To clarify, are you looking for any specific calculation related to this date? Please provide more details, and I'll be happy to assist you further.