MATLAB: How to Add the Individual digits of a result

Question

>> 789*4567
ans =
       3603363
I want to add each element of the ans :

i.e., >> 3+6+0+3+3+6+3

ans =
      24

Help me how to do this?

Answer 1

Lots of ways...just a couple--

>> sum(str2num(num2str(789*4567).'))
ans =
  24
>> >> sum(sscanf(num2str(789*4567),'%1d'))
ans =
  24
>>