We're dividing 6662909 by 820 
The aim is to understand the frequency of 820 in 6662909.

Moving on to step 1:
If we divide 6 by 820, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 820

Advancing to step 2:
820 can be fit into 66 0 times, resulting in a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Take the next digit (6) from the dividend and append it to 66, then repeat: 666 / 820

Step 3:
The number 820 fits into 666 0 times, leaving a remainder of 666.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 666, we end up with 666.
Grab the next digit (2) from the dividend, add it to 666, then carry on: 6662 / 820

Going ahead to step 4:
820 can be fit into 6662 8 times, resulting in a remainder of 102.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 6560 away from 6662, we end up with 102.
Append the next digit (9) from the dividend to 102 and continue with: 1029 / 820

Advancing to step 5:
820 can be fit into 1029 1 times, resulting in a remainder of 209.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
If we take 820 away from 1029, we end up with 209.
Fetch the next digit (0) from the dividend, attach it to 209 and continue: 2090 / 820

Going ahead to step 6:
820 goes into 2090 2 times with a remainder of 450.
Write down 2 as next digit of the result. 
Result so far: 812.0
Subtract 1640 from 2090 to get 450.
Fetch the next digit (9) from the dividend, attach it to 450 and continue: 4509 / 820

Let's proceed to step 7:
When dividing 4509 by 820, we get 5 with a remainder of 409.
Record the quotient 5 as the next digit in the result. 
Result so far: 8125.0
Deduct 4100 from 4509 and we're left with 409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

Going ahead to step 8:
When dividing 4090 by 820, we get 4 with a remainder of 810.
Put 4 as the next digit of the answer. 
Result so far: 8125.4
Subtracting 3280 from 4090 leaves us with 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8100, and continue the process.

Going ahead to step 9:
8100 divided by 820 is 9 with a remainder of 720.
Put 9 as the next digit of the answer. 
Result so far: 8125.49
If we take 7380 away from 8100, we end up 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.

Going ahead to step 10:
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: 8125.498
Deduct 6560 from 7200 and we're left with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Advancing to step 11:
6400 divided by 820 is 7 with a remainder of 660.
The number 7 becomes the next digit in our result. 
Result so far: 8125.4987
If we take 5740 away from 6400, we end up 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.

Step 12:
820 can be fit into 6600 8 times, resulting in a remainder of 40.
The next digit of our result is 8. 
Result so far: 8125.49878
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.

Step 13:
When dividing 400 by 820, we get 0 with a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 8125.49878
If we subtract 0 from 400, we 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.

Step 14:
4000 divided by 820 is 4 with a remainder of 720.
The number 4 becomes the next digit in our result. 
Result so far: 8125.4987804
If we take 3280 away from 4000, we end up 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 15:
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: 8125.49878048
Subtract 6560 from 7200 to get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

After the division, we end up with 8125.49878048 and a remainder of 6.4e-07.