t1 = t1 + A(1,1) + A(2,1) + A(3,1) + A(4,1)
t1 = 0 + 4 + 3 + 2.1 + 5
t1 = 14.1

t2 = t2 + A(1,2) + A(2,2) + A(3,2) + A(4,2)
t2 = 0 + 5 + 3.3 + 10 + 8
t2 = 26.3

t3 = t3 + A(1,3) + A(2,3) + A(3,3) + A(4,3)
t3 = 0 + 2 + 4 + 6 + 8
t3 = 20