66526294 ÷ 523 
The aim is to understand the frequency of 523 in 66526294.

Step 1:
6 divided by 523 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 523

Let's proceed to step 2:
523 goes into 66 0 times with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Take the next digit (5) from the dividend and append it to 66, then repeat: 665 / 523

Moving on to step 3:
665 divided by 523 is 1 with a remainder of 142.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 523 from 665 to get 142.
Grab the next digit (2) from the dividend, add it to 142, then carry on: 1422 / 523

Moving on to step 4:
523 can be fit into 1422 2 times, resulting in a remainder of 376.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 1046 from 1422 leaves us with 376.
Append the next digit (6) from the dividend to 376 and continue with: 3766 / 523

Step 5:
3766 divided by 523 is 7 with a remainder of 105.
Record the quotient 7 as the next digit in the result. 
Result so far: 127.0
Deduct 3661 from 3766 and we're left with 105.
Include the next digit (2) from the dividend after 105, then repeat: 1052 / 523

On to step 6:
If we divide 1052 by 523, we get 2 and a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 1272.0
If we subtract 1046 from 1052, we get 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 523

Step 7:
523 goes into 69 0 times with a remainder of 69.
Record the quotient 0 as the next digit in the result. 
Result so far: 12720.0
Subtract 0 from 69 to get 69.
Append the next digit (4) from the dividend to 69 and continue with: 694 / 523

Advancing to step 8:
523 goes into 694 1 times with a remainder of 171.
The number 1 becomes the next digit in our result. 
Result so far: 127201.0
Subtract 523 from 694 to get 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Step 9:
The number 523 fits into 1710 3 times, leaving a remainder of 141.
The number 3 becomes the next digit in our result. 
Result so far: 127201.3
If we subtract 1569 from 1710, we get 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Moving on to step 10:
If we divide 1410 by 523, we get 2 and a remainder of 364.
The next digit of our result is 2. 
Result so far: 127201.32
If we subtract 1046 from 1410, we get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Advancing to step 11:
523 goes into 3640 6 times with a remainder of 502.
The next digit of our result is 6. 
Result so far: 127201.326
If we take 3138 away from 3640, we end up with 502.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5020, and continue the process.

Let's proceed to step 12:
5020 divided by 523 is 9 with a remainder of 313.
The number 9 becomes the next digit in our result. 
Result so far: 127201.3269
If we take 4707 away from 5020, we end up with 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Let's proceed to step 13:
If we divide 3130 by 523, we get 5 and a remainder of 515.
The number 5 becomes the next digit in our result. 
Result so far: 127201.32695
Subtract 2615 from 3130 to get 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Step 14:
The number 523 fits into 5150 9 times, leaving a remainder of 443.
Use 9 as the next digit of our solution. 
Result so far: 127201.326959
Subtract 4707 from 5150 to get 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

On to step 15:
If we divide 4430 by 523, we get 8 and a remainder of 246.
The next digit of our result is 8. 
Result so far: 127201.3269598
If we subtract 4184 from 4430, we get 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Let's proceed to step 16:
523 goes into 2460 4 times with a remainder of 368.
Write down 4 as next digit of the result. 
Result so far: 127201.32695984
The remainder is 368 after subtracting 2092 from 2460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

The final result is 127201.32695984 with a remainder of 3.68e-07.