We divide 393752 by 81
The aim is to understand the frequency of 81 in 393752.

Step 1:
81 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 81

Moving on to step 2:
81 can be fit into 39 0 times, resulting in a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Bring next digit (3) of the dividend behind the 39 and repeat the process: 393 / 81

Moving on to step 3:
393 divided by 81 is 4 with a remainder of 69.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 324 from 393 leaves us with 69.
Append the next digit (7) from the dividend to 69 and continue with: 697 / 81

On to step 4:
697 divided by 81 is 8 with a remainder of 49.
Write down 8 as next digit of the result. 
Result so far: 48.0
Subtract 648 from 697 to get 49.
Include the next digit (5) from the dividend after 49, then repeat: 495 / 81

Advancing to step 5:
495 divided by 81 is 6 with a remainder of 9.
Write down 6 as next digit of the result. 
Result so far: 486.0
Deduct 486 from 495 and we're left with 9.
Bring next digit (2) of the dividend behind the 9 and repeat the process: 92 / 81

Moving on to step 6:
If we divide 92 by 81, we get 1 and a remainder of 11.
The next digit of our result is 1. 
Result so far: 4861.0
Subtract 81 from 92 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 7:
When dividing 110 by 81, we get 1 with a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 4861.1
Subtract 81 from 110 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 8:
The number 81 fits into 290 3 times, leaving a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 4861.13
If we subtract 243 from 290, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 9:
When dividing 470 by 81, we get 5 with a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 4861.135
Subtracting 405 from 470 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 10:
650 divided by 81 is 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 4861.1358
Subtracting 648 from 650 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 11:
81 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 4861.1358
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 12:
81 goes into 200 2 times with a remainder of 38.
The next digit of our result is 2. 
Result so far: 4861.135802
Subtract 162 from 200 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 13:
81 goes into 380 4 times with a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 4861.1358024
If we take 324 away from 380, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 14:
If we divide 560 by 81, we get 6 and a remainder of 74.
The next digit of our result is 6. 
Result so far: 4861.13580246
Subtracting 486 from 560 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Our division results in 4861.13580246 with a remaining 7.4e-08.