1. The problem statement, all variables and given/known data Find the sum of all the digits in the integers from 1 to 1 000 000 000. Ex: 2378:2+3+7+8=20 2. Relevant equations We're not supposed to use equations for the sum of a series. 3. The attempt at a solution I really don't have much of a clue as to how to start, so any help pointing me in the right direction would be great.