MATLAB: Summing all the Matrices in a Cell Array

cell arraysumming

Lets say i have a cell array with 3 7×2 matrices in it:

How do i sum them up so to get a single 7×2 matrix?

In this exmaple, i only have 3 matrices.

But i may have a cell array with maybe 100+ matrices.

How should i do it?

a={rand(7,2)  rand(7,2)  rand(7,2)}  % This is an example
b=sum(cat(3,a{:}),3)

z(cellfun('isempty',z))=[]

g{1,1} = [1 2 3
  2 4 5
  5 3 2]
g{1,2} =[ 2 4 1
  1 7 2
  1 1 2]
g{1,3} =[ 2 2 2
  3 1 2
  4 8 1]
result = max(cat(3, g{:}), [], 3)