How does this (a) equal to :

326^2 - 0 = 2(a)(0.83)

a = 64,022 m/sec^2

My calculations do not seem to be coming out properly what so ever if we are solving for 2a I believe.

326^2=106276

106276=2*a*0.83 Divided with 0.83

(106276/.83)=2*a

2*a=128043,3735 Divided with 2

a=64021,68675