Let's divide 520046 by 81
The aim is to understand the frequency of 81 in 520046.

Going ahead to step 1:
When dividing 5 by 81, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (2) from the dividend, add it to 5, then carry on: 52 / 81

Step 2:
The number 81 fits into 52 0 times, leaving a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 52 after subtracting 0 from 52.
Take the next digit (0) from the dividend and append it to 52, then repeat: 520 / 81

Going ahead to step 3:
If we divide 520 by 81, we get 6 and a remainder of 34.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 486 from 520 to get 34.
Include the next digit (0) from the dividend after 34, then repeat: 340 / 81

Step 4:
81 goes into 340 4 times with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 64.0
Subtract 324 from 340 to get 16.
Bring next digit (4) of the dividend behind the 16 and repeat the process: 164 / 81

Moving on to step 5:
81 goes into 164 2 times with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 642.0
Subtract 162 from 164 to get 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 81

Going ahead to step 6:
The number 81 fits into 26 0 times, leaving a remainder of 26.
Record the quotient 0 as the next digit in the result. 
Result so far: 6420.0
If we subtract 0 from 26, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 7:
If we divide 260 by 81, we get 3 and a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 6420.3
If we subtract 243 from 260, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 8:
When dividing 170 by 81, we get 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 6420.32
Subtract 162 from 170 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
81 can be fit into 80 0 times, resulting in a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 6420.32
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 10:
The number 81 fits into 800 9 times, leaving a remainder of 71.
The number 9 becomes the next digit in our result. 
Result so far: 6420.3209
Subtract 729 from 800 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 11:
If we divide 710 by 81, we get 8 and a remainder of 62.
The number 8 becomes the next digit in our result. 
Result so far: 6420.32098
If we subtract 648 from 710, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 12:
81 can be fit into 620 7 times, resulting in a remainder of 53.
Write down 7 as next digit of the result. 
Result so far: 6420.320987
Deduct 567 from 620 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 13:
81 goes into 530 6 times with a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 6420.3209876
Deduct 486 from 530 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 14:
If we divide 440 by 81, we get 5 and a remainder of 35.
The next digit of our result is 5. 
Result so far: 6420.32098765
The remainder is 35 after subtracting 405 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Our division results in 6420.32098765 with a remaining 3.5e-08.