81627379 ÷ 9 
The aim is to understand the frequency of 9 in 81627379.

Going ahead to step 1:
If we divide 8 by 9, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 9

Moving on to step 2:
9 goes into 81 9 times with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we take 81 away from 81, we end up with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 9

Let's proceed to step 3:
6 divided by 9 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 90.0
If we take 0 away from 6, we end up with 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 9

Let's proceed to step 4:
When dividing 62 by 9, we get 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 906.0
The remainder is 8 after subtracting 54 from 62.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 9

Advancing to step 5:
When dividing 87 by 9, we get 9 with a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 9069.0
Deduct 81 from 87 and we're left with 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 9

Let's proceed to step 6:
When dividing 63 by 9, we get 7 with a remainder of 0.
The next digit of our result is 7. 
Result so far: 90697.0
Subtracting 63 from 63 leaves us with 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 9

Advancing to step 7:
When dividing 7 by 9, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 906970.0
Subtract 0 from 7 to get 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 9

On to step 8:
If we divide 79 by 9, we get 8 and a remainder of 7.
Record the quotient 8 as the next digit in the result. 
Result so far: 9069708.0
Deduct 72 from 79 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 9:
If we divide 70 by 9, we get 7 and a remainder of 7.
The next digit of our result is 7. 
Result so far: 9069708.7
Subtracting 63 from 70 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 10:
The number 9 fits into 70 7 times, leaving a remainder of 7.
The next digit of our result is 7. 
Result so far: 9069708.77
If we take 63 away from 70, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Our division results in 9069708.77 with a remaining 0.007.