MATLAB: Extract numbers from cell array and calculate mean

MATLAB

I have a cell array containing numbers and strings. Can someone help me with a code that can calculate the mean of the numbers in each row?
Mix = {
'U' [4.7506e+05] [5.0141e+05] [5.4067e+05] [ 542976] [5.7124e+05]
[3.9810e+05] [4.4926e+05] 'U' [ 531440] [5.3655e+05] 'O'
[3.0915e+05] [3.6336e+05] [3.7107e+05] [3.8252e+05] [3.3988e+05] [4.3384e+05]
'U' 'U' 'U' 'O' 'U' [3.7107e+05]
'U' [3.7107e+05] 'U' [3.8252e+05] 'U' 'O' }

Best Answer

index=cellfun(@isnumeric,Mix);
Mix(~index)={0};
mean(cell2mat(Mix),2)