Sum of cell array column

Hi

I have this cell array and I need to get the sum of column 11. How? Please help.

summary3 =

Columns 1 through 3

    {1x39 cell}    {1x75 cell}    [ 7.669142585357160e-04]
    {1x75 cell}    {1x75 cell}    [-1.206232786783515e-04]
    {1x39 cell}    {1x41 cell}    [ 8.630787019556518e-04]
    {1x41 cell}    {1x65 cell}    [-2.445883525841570e-05]
    {1x65 cell}    {1x97 cell}    [ 9.109657363289406e-04]

Columns 4 through 6

    [-1.206232786783515e-04]    [3.231454899286823e-04]    [150]
    [     0.001808452047926]    [8.439143846238298e-04]    [-40]
    [-2.445883525841570e-05]    [4.193099333486180e-04]    [170]
    [ 9.109657363289406e-04]    [4.432534505352624e-04]    [-20]
    [-6.645138877833179e-04]    [1.232259242728113e-04]    [180]

Columns 7 through 11

    [ -40]    [ 55]    [1x1 sym]    [1x1 sym]    [1x1 sym]
    [ 330]    [145]    [1x1 sym]    [1x1 sym]    [1x1 sym]
    [ -20]    [ 75]    [1x1 sym]    [1x1 sym]    [1x1 sym]
    [ 180]    [ 80]    [1x1 sym]    [1x1 sym]    [1x1 sym]
    [-140]    [ 20]    [1x1 sym]    [1x1 sym]    [1x1 sym]

Answer 1

[Azzi Abdelmalek]

oout=sum(cellfun(@double,summary3(:,11)))

[Mohammed]

Thank you very much, working great

[Ahmet]

Thank you :) you helped me too