We divide 867007 by 81
The aim is to understand the frequency of 81 in 867007.

Let's proceed to step 1:
8 divided by 81 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 81

On to step 2:
If we divide 86 by 81, we get 1 and a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 81 from 86, we get 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 81

Moving on to step 3:
81 can be fit into 57 0 times, resulting in a remainder of 57.
The next digit of our result is 0. 
Result so far: 10.0
If we subtract 0 from 57, we get 57.
Take the next digit (0) from the dividend and append it to 57, then repeat: 570 / 81

Moving on to step 4:
When dividing 570 by 81, we get 7 with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 107.0
Deduct 567 from 570 and we're left with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 81

Step 5:
If we divide 30 by 81, we get 0 and a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 1070.0
Subtracting 0 from 30 leaves us with 30.
Fetch the next digit (7) from the dividend, attach it to 30 and continue: 307 / 81

Step 6:
81 goes into 307 3 times with a remainder of 64.
The number 3 becomes the next digit in our result. 
Result so far: 10703.0
Deduct 243 from 307 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 7:
81 can be fit into 640 7 times, resulting in a remainder of 73.
The next digit of our result is 7. 
Result so far: 10703.7
If we subtract 567 from 640, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 8:
If we divide 730 by 81, we get 9 and a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 10703.79
Deduct 729 from 730 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 9:
If we divide 10 by 81, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 10703.79
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
When dividing 100 by 81, we get 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 10703.7901
The remainder is 19 after subtracting 81 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 11:
81 can be fit into 190 2 times, resulting in a remainder of 28.
The next digit of our result is 2. 
Result so far: 10703.79012
If we take 162 away from 190, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 12:
81 can be fit into 280 3 times, resulting in a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 10703.790123
Deduct 243 from 280 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 13:
The number 81 fits into 370 4 times, leaving a remainder of 46.
The number 4 becomes the next digit in our result. 
Result so far: 10703.7901234
If we subtract 324 from 370, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 14:
The number 81 fits into 460 5 times, leaving a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 10703.79012345
Subtract 405 from 460 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Our division results in 10703.79012345 with a remaining 5.5e-08.