Calculate the digit sum of 87
Calculate the reduced digit sum of 87
Add up 2 digits of 87:
Digit Sum → 8 + 7 = 15
Since our digit sum > 9:
repeat this process to get the reduced digit sum:
Our new number to evaluate is 15
Add up 2 digits of 15:
Digit Sum → 1 + 5 = 6
Since our digit sum ≤ 9:
we have our reduced digit sum
Final Answer
Digit Sum = 15
Reduced Digit Sum = 6
Reduced Digit Sum = 6
