⓪ - Circled Digit Zero

Unicode does have 0-10 equivalents for those characters, I think: ⓿ 24FF;NEGATIVE CIRCLED DIGIT ZERO;No;0;ON;;;0;0;N;;;;; 2776;DINGBAT NEGATIVE CIRCLED DIGIT ONE;No;0;ON;;;1 ...

Unicode does have 0-10 equivalents for those characters, I think: ⓿ 24FF;NEGATIVE CIRCLED DIGIT ZERO;No;0;ON;;;0;0;N;;;;; 2776;DINGBAT NEGATIVE CIRCLED DIGIT ONE;No;0;ON;;;1 ...

double circled digit eight: ⓽: 9469: ⓽: 24fd: double circled digit nine: ⓾: 9470: ⓾: 24fe: double circled number ten: ⓿: 9471: ⓿: 24ff: negative circled digit zero

negative circled digit zero: : 1: e2 9d b6: dingbat negative circled digit one: inverse circled digit one: : 2: e2 9d b7: dingbat negative circled digit two

negative circled digit zero: ⓿: view: u+2776: dingbat negative circled digit one: : view: u+2777: dingbat negative circled digit two: : view: u+2778: dingbat negative circled digit three

Circled digit zero: Enclosed Alphanumerics: j: 106: 0x6A: one: ①: 9312: U+2460: Circled digit one: Enclosed Alphanumerics: k: 107: 0x6B: two: ②: 9313: U+2461: Circled digit two

Double Circled Number Ten: Additional white on black circled number; 24FF ⓿ Negative Circled Digit Zero → 2776 dingbat negative circled digit one

The circled digit and everything to the right of the circled digit changes to a zero. 7. The underlined digit will stay the same or move up one digit and everything to the left ...

... TAMIL NUMBER TEN \u0BF0 10 -1 -1 OtherNumber U+0F33 TIBETAN DIGIT HALF ZERO \u0F33 -0.5 -1 -1 OtherNumber U+2788 CIRCLED SANS-SERIF DIGIT ...

Now circle one digit. (canNOT be zero, because that is already a circle) Now re-write that number excluding the circled digit. Compute the sum of the digits.