Problem of the Week - June 24, 2019

Part 1 is to determine the sum of all the digits needed to write each counting number from 0 through 1,000,000,000,000.  For example, the sum of all the digits needed to write each counting number from 18 through 23 would be 1+8+1+9+2+0+2+1+2+2+2+3=33. 

Part 2 is to find the sum of the digits of the sum found in part 1.  In other words, for 18 through 23, the sum of all of the digits was 33, and the sum of the digits of that sum is 3 + 3 = 6. 

Finally, only submit your sum of the digits for the sum of the digits or simply the answer you determined for part 2.

Simply submit your answer to part 2.

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