64441035 ÷ 820 
The aim is to understand the frequency of 820 in 64441035.

On to step 1:
6 divided by 820 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 820

Step 2:
The number 820 fits into 64 0 times, leaving a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Bring next digit (4) of the dividend behind the 64 and repeat the process: 644 / 820

Advancing to step 3:
820 can be fit into 644 0 times, resulting in a remainder of 644.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 644, we get 644.
Fetch the next digit (4) from the dividend, attach it to 644 and continue: 6444 / 820

Step 4:
820 goes into 6444 7 times with a remainder of 704.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Deduct 5740 from 6444 and we're left with 704.
Take the next digit (1) from the dividend and append it to 704, then repeat: 7041 / 820

Advancing to step 5:
820 can be fit into 7041 8 times, resulting in a remainder of 481.
The number 8 becomes the next digit in our result. 
Result so far: 78.0
If we take 6560 away from 7041, we end up with 481.
Fetch the next digit (0) from the dividend, attach it to 481 and continue: 4810 / 820

Step 6:
820 goes into 4810 5 times with a remainder of 710.
The number 5 becomes the next digit in our result. 
Result so far: 785.0
Subtracting 4100 from 4810 leaves us with 710.
Append the next digit (3) from the dividend to 710 and continue with: 7103 / 820

On to step 7:
7103 divided by 820 is 8 with a remainder of 543.
Use 8 as the next digit of our solution. 
Result so far: 7858.0
Subtract 6560 from 7103 to get 543.
Grab the next digit (5) from the dividend, add it to 543, then carry on: 5435 / 820

Moving on to step 8:
820 goes into 5435 6 times with a remainder of 515.
The next digit of our result is 6. 
Result so far: 78586.0
Subtracting 4920 from 5435 leaves us with 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Let's proceed to step 9:
When dividing 5150 by 820, we get 6 with a remainder of 230.
Use 6 as the next digit of our solution. 
Result so far: 78586.6
The remainder is 230 after subtracting 4920 from 5150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Going ahead to step 10:
When dividing 2300 by 820, we get 2 with a remainder of 660.
The next digit of our result is 2. 
Result so far: 78586.62
Subtracting 1640 from 2300 leaves us with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Let's proceed to step 11:
The number 820 fits into 6600 8 times, leaving a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 78586.628
Subtracting 6560 from 6600 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 12:
820 can be fit into 400 0 times, resulting in a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 78586.628
Subtract 0 from 400 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 13:
820 goes into 4000 4 times with a remainder of 720.
Put 4 as the next digit of the answer. 
Result so far: 78586.62804
Deduct 3280 from 4000 and we're left with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Advancing to step 14:
820 can be fit into 7200 8 times, resulting in a remainder of 640.
Put 8 as the next digit of the answer. 
Result so far: 78586.628048
The remainder is 640 after subtracting 6560 from 7200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 15:
6400 divided by 820 is 7 with a remainder of 660.
Put 7 as the next digit of the answer. 
Result so far: 78586.6280487
Subtracting 5740 from 6400 leaves us with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

On to step 16:
6600 divided by 820 is 8 with a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 78586.62804878
If we take 6560 away from 6600, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 78586.62804878, with a leftover of 4e-08.