We divide 387754 by 81
The aim is to understand the frequency of 81 in 387754.

On to step 1:
81 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 81

Advancing to step 2:
When dividing 38 by 81, we get 0 with a remainder of 38.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 38, we end up with 38.
Take the next digit (7) from the dividend and append it to 38, then repeat: 387 / 81

Step 3:
If we divide 387 by 81, we get 4 and a remainder of 63.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 324 from 387 leaves us with 63.
Fetch the next digit (7) from the dividend, attach it to 63 and continue: 637 / 81

Step 4:
81 can be fit into 637 7 times, resulting in a remainder of 70.
Record the quotient 7 as the next digit in the result. 
Result so far: 47.0
Subtracting 567 from 637 leaves us with 70.
Bring next digit (5) of the dividend behind the 70 and repeat the process: 705 / 81

Let's proceed to step 5:
705 divided by 81 is 8 with a remainder of 57.
Use 8 as the next digit of our solution. 
Result so far: 478.0
If we take 648 away from 705, we end up with 57.
Include the next digit (4) from the dividend after 57, then repeat: 574 / 81

Advancing to step 6:
574 divided by 81 is 7 with a remainder of 7.
The next digit of our result is 7. 
Result so far: 4787.0
The remainder is 7 after subtracting 567 from 574.
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 7:
70 divided by 81 is 0 with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 4787.0
Deduct 0 from 70 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 8:
If we divide 700 by 81, we get 8 and a remainder of 52.
The next digit of our result is 8. 
Result so far: 4787.08
Subtracting 648 from 700 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 9:
The number 81 fits into 520 6 times, leaving a remainder of 34.
The number 6 becomes the next digit in our result. 
Result so far: 4787.086
Deduct 486 from 520 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 10:
340 divided by 81 is 4 with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 4787.0864
Subtract 324 from 340 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 11:
81 can be fit into 160 1 times, resulting in a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 4787.08641
The remainder is 79 after subtracting 81 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 12:
81 goes into 790 9 times with a remainder of 61.
The number 9 becomes the next digit in our result. 
Result so far: 4787.086419
Deduct 729 from 790 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Step 13:
81 can be fit into 610 7 times, resulting in a remainder of 43.
Write down 7 as next digit of the result. 
Result so far: 4787.0864197
If we subtract 567 from 610, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 14:
The number 81 fits into 430 5 times, leaving a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 4787.08641975
Deduct 405 from 430 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final result is 4787.08641975 with a remainder of 2.5e-08.