We're dividing 84520263 by 657 
The aim is to understand the frequency of 657 in 84520263.

Moving on to step 1:
657 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 657

Moving on to step 2:
657 can be fit into 84 0 times, resulting in a remainder of 84.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Include the next digit (5) from the dividend after 84, then repeat: 845 / 657

Going ahead to step 3:
845 divided by 657 is 1 with a remainder of 188.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 657 from 845 leaves us with 188.
Append the next digit (2) from the dividend to 188 and continue with: 1882 / 657

Going ahead to step 4:
1882 divided by 657 is 2 with a remainder of 568.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Deduct 1314 from 1882 and we're left with 568.
Append the next digit (0) from the dividend to 568 and continue with: 5680 / 657

Moving on to step 5:
If we divide 5680 by 657, we get 8 and a remainder of 424.
Put 8 as the next digit of the answer. 
Result so far: 128.0
Deduct 5256 from 5680 and we're left with 424.
Fetch the next digit (2) from the dividend, attach it to 424 and continue: 4242 / 657

Going ahead to step 6:
When dividing 4242 by 657, we get 6 with a remainder of 300.
Write down 6 as next digit of the result. 
Result so far: 1286.0
If we take 3942 away from 4242, we end up with 300.
Bring next digit (6) of the dividend behind the 300 and repeat the process: 3006 / 657

Moving on to step 7:
The number 657 fits into 3006 4 times, leaving a remainder of 378.
The number 4 becomes the next digit in our result. 
Result so far: 12864.0
If we subtract 2628 from 3006, we get 378.
Fetch the next digit (3) from the dividend, attach it to 378 and continue: 3783 / 657

Moving on to step 8:
657 goes into 3783 5 times with a remainder of 498.
The next digit of our result is 5. 
Result so far: 128645.0
Subtracting 3285 from 3783 leaves us with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Step 9:
If we divide 4980 by 657, we get 7 and a remainder of 381.
Put 7 as the next digit of the answer. 
Result so far: 128645.7
Subtract 4599 from 4980 to get 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Step 10:
The number 657 fits into 3810 5 times, leaving a remainder of 525.
Put 5 as the next digit of the answer. 
Result so far: 128645.75
Subtracting 3285 from 3810 leaves us with 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

On to step 11:
The number 657 fits into 5250 7 times, leaving a remainder of 651.
Use 7 as the next digit of our solution. 
Result so far: 128645.757
Deduct 4599 from 5250 and we're left with 651.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6510, and continue the process.

Let's proceed to step 12:
6510 divided by 657 is 9 with a remainder of 597.
The number 9 becomes the next digit in our result. 
Result so far: 128645.7579
If we subtract 5913 from 6510, we get 597.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5970, and continue the process.

Step 13:
The number 657 fits into 5970 9 times, leaving a remainder of 57.
The number 9 becomes the next digit in our result. 
Result so far: 128645.75799
Deduct 5913 from 5970 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

The final outcome is 128645.75799, with a leftover of 5.7e-05.