?Calculating KDA?

Can someone explain the math or give an equation for calculating the KDA?

Also can you explain the math behind how many points you gain for a win or lose for a loss?

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> Can someone explain the math or give an equation for calculating the KDA?
>
> Also can you explain the math behind how many points you gain for a win or lose for a loss?

I believe it Is kills+assits+medals divided by deaths

It should be KA/D, but in Halo 5 i have no clue what it is.

K/D is a much better statistic than KA/D anyway. Just do Kills / Deaths.