4613815 ÷ 821 
The aim is to understand the frequency of 821 in 4613815.

Moving on to step 1:
821 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (6) from the dividend, add it to 4, then carry on: 46 / 821

On to step 2:
When dividing 46 by 821, we get 0 with a remainder of 46.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 46 after subtracting 0 from 46.
Grab the next digit (1) from the dividend, add it to 46, then carry on: 461 / 821

Step 3:
461 divided by 821 is 0 with a remainder of 461.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 461 and we're left with 461.
Grab the next digit (3) from the dividend, add it to 461, then carry on: 4613 / 821

Step 4:
The number 821 fits into 4613 5 times, leaving a remainder of 508.
Write down 5 as next digit of the result. 
Result so far: 5.0
Deduct 4105 from 4613 and we're left with 508.
Take the next digit (8) from the dividend and append it to 508, then repeat: 5088 / 821

Step 5:
821 goes into 5088 6 times with a remainder of 162.
Record the quotient 6 as the next digit in the result. 
Result so far: 56.0
The remainder is 162 after subtracting 4926 from 5088.
Include the next digit (1) from the dividend after 162, then repeat: 1621 / 821

Going ahead to step 6:
When dividing 1621 by 821, we get 1 with a remainder of 800.
Put 1 as the next digit of the answer. 
Result so far: 561.0
Subtracting 821 from 1621 leaves us with 800.
Bring next digit (5) of the dividend behind the 800 and repeat the process: 8005 / 821

Advancing to step 7:
When dividing 8005 by 821, we get 9 with a remainder of 616.
Use 9 as the next digit of our solution. 
Result so far: 5619.0
Subtracting 7389 from 8005 leaves us with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Let's proceed to step 8:
821 can be fit into 6160 7 times, resulting in a remainder of 413.
The number 7 becomes the next digit in our result. 
Result so far: 5619.7
Subtract 5747 from 6160 to get 413.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4130, and continue the process.

Going ahead to step 9:
821 goes into 4130 5 times with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 5619.75
The remainder is 25 after subtracting 4105 from 4130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 10:
250 divided by 821 is 0 with a remainder of 250.
The next digit of our result is 0. 
Result so far: 5619.75
Subtract 0 from 250 to get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Advancing to step 11:
The number 821 fits into 2500 3 times, leaving a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 5619.7503
Deduct 2463 from 2500 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 12:
370 divided by 821 is 0 with a remainder of 370.
Put 0 as the next digit of the answer. 
Result so far: 5619.7503
Subtract 0 from 370 to get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

On to step 13:
3700 divided by 821 is 4 with a remainder of 416.
The next digit of our result is 4. 
Result so far: 5619.750304
The remainder is 416 after subtracting 3284 from 3700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Let's proceed to step 14:
821 goes into 4160 5 times with a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 5619.7503045
Subtract 4105 from 4160 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 15:
821 goes into 550 0 times with a remainder of 550.
Record the quotient 0 as the next digit in the result. 
Result so far: 5619.7503045
Subtracting 0 from 550 leaves us with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

After the division, we end up with 5619.7503045 and a remainder of 5.5e-07.