Calculate the digit sum of 378
Calculate the reduced digit sum of 378
Add up 3 digits of 378:
Digit Sum → 3 + 7 + 8 = 18
Since our digit sum > 9:
repeat this process to get the reduced digit sum:
Our new number to evaluate is 18
Add up 2 digits of 18:
Digit Sum → 1 + 8 = 9
Since our digit sum ≤ 9:
we have our reduced digit sum
Final Answer
Digit Sum = 18
Reduced Digit Sum = 9
Reduced Digit Sum = 9
