8+7++5+5+4+3++2+2+4+5+6+6+

It seems there are extra plus signs in your expression. Assuming you intended to sum the numbers without the extra plus signs, the expression can be simplified as follows:

8 + 7 + 5 + 5 + 4 + 3 + 2 + 2 + 4 + 5 + 6 + 6

Now, let's add these numbers together:

• 8 + 7 = 15
• 15 + 5 = 20
• 20 + 5 = 25
• 25 + 4 = 29
• 29 + 3 = 32
• 32 + 2 = 34
• 34 + 2 = 36
• 36 + 4 = 40
• 40 + 5 = 45
• 45 + 6 = 51
• 51 + 6 = 57

So, the total sum is 57.