We look at the division of 75983713 by 821 
The aim is to understand the frequency of 821 in 75983713.

Moving on to step 1:
821 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 821

Step 2:
The number 821 fits into 75 0 times, leaving a remainder of 75.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 75, we end up with 75.
Include the next digit (9) from the dividend after 75, then repeat: 759 / 821

Step 3:
759 divided by 821 is 0 with a remainder of 759.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 759 leaves us with 759.
Append the next digit (8) from the dividend to 759 and continue with: 7598 / 821

Let's proceed to step 4:
When dividing 7598 by 821, we get 9 with a remainder of 209.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we subtract 7389 from 7598, we get 209.
Include the next digit (3) from the dividend after 209, then repeat: 2093 / 821

Advancing to step 5:
2093 divided by 821 is 2 with a remainder of 451.
Put 2 as the next digit of the answer. 
Result so far: 92.0
If we take 1642 away from 2093, we end up with 451.
Bring next digit (7) of the dividend behind the 451 and repeat the process: 4517 / 821

Advancing to step 6:
4517 divided by 821 is 5 with a remainder of 412.
Put 5 as the next digit of the answer. 
Result so far: 925.0
Subtracting 4105 from 4517 leaves us with 412.
Bring next digit (1) of the dividend behind the 412 and repeat the process: 4121 / 821

Moving on to step 7:
If we divide 4121 by 821, we get 5 and a remainder of 16.
The next digit of our result is 5. 
Result so far: 9255.0
Subtract 4105 from 4121 to get 16.
Grab the next digit (3) from the dividend, add it to 16, then carry on: 163 / 821

Let's proceed to step 8:
163 divided by 821 is 0 with a remainder of 163.
Record the quotient 0 as the next digit in the result. 
Result so far: 92550.0
Subtract 0 from 163 to get 163.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

Moving on to step 9:
821 goes into 1630 1 times with a remainder of 809.
The number 1 becomes the next digit in our result. 
Result so far: 92550.1
The remainder is 809 after subtracting 821 from 1630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8090, and continue the process.

On to step 10:
If we divide 8090 by 821, we get 9 and a remainder of 701.
Use 9 as the next digit of our solution. 
Result so far: 92550.19
If we take 7389 away from 8090, we end up with 701.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7010, and continue the process.

On to step 11:
The number 821 fits into 7010 8 times, leaving a remainder of 442.
The next digit of our result is 8. 
Result so far: 92550.198
Deduct 6568 from 7010 and we're left with 442.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4420, and continue the process.

Moving on to step 12:
When dividing 4420 by 821, we get 5 with a remainder of 315.
Write down 5 as next digit of the result. 
Result so far: 92550.1985
The remainder is 315 after subtracting 4105 from 4420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Step 13:
821 goes into 3150 3 times with a remainder of 687.
Put 3 as the next digit of the answer. 
Result so far: 92550.19853
Subtract 2463 from 3150 to get 687.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6870, and continue the process.

On to step 14:
When dividing 6870 by 821, we get 8 with a remainder of 302.
Write down 8 as next digit of the result. 
Result so far: 92550.198538
The remainder is 302 after subtracting 6568 from 6870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Moving on to step 15:
When dividing 3020 by 821, we get 3 with a remainder of 557.
The number 3 becomes the next digit in our result. 
Result so far: 92550.1985383
If we take 2463 away from 3020, we end up with 557.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5570, and continue the process.

Moving on to step 16:
5570 divided by 821 is 6 with a remainder of 644.
Put 6 as the next digit of the answer. 
Result so far: 92550.19853836
Deduct 4926 from 5570 and we're left with 644.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

In conclusion, the division gives 92550.19853836 with a balance of 6.44e-07.