187635 divided by 81 
The aim is to understand the frequency of 81 in 187635.

Let's proceed to step 1:
81 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 81

Advancing to step 2:
When dividing 18 by 81, we get 0 with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 18 and we're left with 18.
Include the next digit (7) from the dividend after 18, then repeat: 187 / 81

Going ahead to step 3:
81 can be fit into 187 2 times, resulting in a remainder of 25.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 162 away from 187, we end up with 25.
Take the next digit (6) from the dividend and append it to 25, then repeat: 256 / 81

Going ahead to step 4:
The number 81 fits into 256 3 times, leaving a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 23.0
If we take 243 away from 256, we end up with 13.
Grab the next digit (3) from the dividend, add it to 13, then carry on: 133 / 81

Let's proceed to step 5:
If we divide 133 by 81, we get 1 and a remainder of 52.
Write down 1 as next digit of the result. 
Result so far: 231.0
If we take 81 away from 133, we end up with 52.
Bring next digit (5) of the dividend behind the 52 and repeat the process: 525 / 81

On to step 6:
If we divide 525 by 81, we get 6 and a remainder of 39.
Put 6 as the next digit of the answer. 
Result so far: 2316.0
Subtract 486 from 525 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 7:
81 goes into 390 4 times with a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 2316.4
The remainder is 66 after subtracting 324 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 8:
81 can be fit into 660 8 times, resulting in a remainder of 12.
The next digit of our result is 8. 
Result so far: 2316.48
Subtract 648 from 660 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
The number 81 fits into 120 1 times, leaving a remainder of 39.
Write down 1 as next digit of the result. 
Result so far: 2316.481
Subtracting 81 from 120 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 10:
When dividing 390 by 81, we get 4 with a remainder of 66.
The next digit of our result is 4. 
Result so far: 2316.4814
Subtracting 324 from 390 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 11:
If we divide 660 by 81, we get 8 and a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 2316.48148
Subtract 648 from 660 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 12:
When dividing 120 by 81, we get 1 with a remainder of 39.
The next digit of our result is 1. 
Result so far: 2316.481481
The remainder is 39 after subtracting 81 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 13:
81 goes into 390 4 times with a remainder of 66.
Record the quotient 4 as the next digit in the result. 
Result so far: 2316.4814814
Subtract 324 from 390 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 14:
660 divided by 81 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 2316.48148148
The remainder is 12 after subtracting 648 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

In conclusion, the division gives 2316.48148148 with a balance of 1.2e-08.