Answer :
I'm quite confused about what you mean, but if you mean the sum of given numbers (assuming it's not 832 but 8, 3 and 2) than just add them:
8 + 3 + 2 = 13
If that wasn't what you meant then please give more details :)
8 + 3 + 2 = 13
If that wasn't what you meant then please give more details :)