#[Dyalog APL](http://goo.gl/9KrKoM), 10 [bytes](http://meta.codegolf.stackexchange.com/a/9429/43319)
    ⍎+≢+(+/⍎¨)

Takes string and returns

&emsp;`(+/⍎¨)` the sum of the evaluation of each character (digit)<br>
`+`<br>
&emsp;`≢` the length of the string<br>
`+`<br>
&emsp;`⍎` the evaluation of the entire string<br>