We look at the division of 86129867 by 181 
The aim is to understand the frequency of 181 in 86129867.

Going ahead to step 1:
If we divide 8 by 181, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 181

Let's proceed to step 2:
The number 181 fits into 86 0 times, leaving a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Bring next digit (1) of the dividend behind the 86 and repeat the process: 861 / 181

Advancing to step 3:
If we divide 861 by 181, we get 4 and a remainder of 137.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 724 from 861 to get 137.
Grab the next digit (2) from the dividend, add it to 137, then carry on: 1372 / 181

On to step 4:
When dividing 1372 by 181, we get 7 with a remainder of 105.
Use 7 as the next digit of our solution. 
Result so far: 47.0
The remainder is 105 after subtracting 1267 from 1372.
Grab the next digit (9) from the dividend, add it to 105, then carry on: 1059 / 181

Step 5:
181 goes into 1059 5 times with a remainder of 154.
Use 5 as the next digit of our solution. 
Result so far: 475.0
Deduct 905 from 1059 and we're left with 154.
Grab the next digit (8) from the dividend, add it to 154, then carry on: 1548 / 181

Let's proceed to step 6:
If we divide 1548 by 181, we get 8 and a remainder of 100.
Put 8 as the next digit of the answer. 
Result so far: 4758.0
Subtracting 1448 from 1548 leaves us with 100.
Take the next digit (6) from the dividend and append it to 100, then repeat: 1006 / 181

Going ahead to step 7:
1006 divided by 181 is 5 with a remainder of 101.
Put 5 as the next digit of the answer. 
Result so far: 47585.0
Subtract 905 from 1006 to get 101.
Append the next digit (7) from the dividend to 101 and continue with: 1017 / 181

On to step 8:
1017 divided by 181 is 5 with a remainder of 112.
Record the quotient 5 as the next digit in the result. 
Result so far: 475855.0
If we take 905 away from 1017, we end up with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

On to step 9:
If we divide 1120 by 181, we get 6 and a remainder of 34.
Use 6 as the next digit of our solution. 
Result so far: 475855.6
The remainder is 34 after subtracting 1086 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 10:
340 divided by 181 is 1 with a remainder of 159.
The number 1 becomes the next digit in our result. 
Result so far: 475855.61
The remainder is 159 after subtracting 181 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Going ahead to step 11:
When dividing 1590 by 181, we get 8 with a remainder of 142.
The next digit of our result is 8. 
Result so far: 475855.618
If we take 1448 away from 1590, we end up with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

On to step 12:
When dividing 1420 by 181, we get 7 with a remainder of 153.
Write down 7 as next digit of the result. 
Result so far: 475855.6187
Subtract 1267 from 1420 to get 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Going ahead to step 13:
The number 181 fits into 1530 8 times, leaving a remainder of 82.
Use 8 as the next digit of our solution. 
Result so far: 475855.61878
Subtract 1448 from 1530 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 14:
181 goes into 820 4 times with a remainder of 96.
Use 4 as the next digit of our solution. 
Result so far: 475855.618784
If we subtract 724 from 820, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 15:
181 goes into 960 5 times with a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 475855.6187845
Deduct 905 from 960 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 16:
When dividing 550 by 181, we get 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 475855.61878453
If we take 543 away from 550, 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.

In conclusion, the division gives 475855.61878453 with a balance of 7e-09.