81446577 ÷ 523 
The aim is to understand the frequency of 523 in 81446577.

Step 1:
If we divide 8 by 523, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 523

Step 2:
If we divide 81 by 523, we get 0 and a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Fetch the next digit (4) from the dividend, attach it to 81 and continue: 814 / 523

Advancing to step 3:
523 can be fit into 814 1 times, resulting in a remainder of 291.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 523 from 814, we get 291.
Include the next digit (4) from the dividend after 291, then repeat: 2914 / 523

Advancing to step 4:
523 goes into 2914 5 times with a remainder of 299.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Subtracting 2615 from 2914 leaves us with 299.
Grab the next digit (6) from the dividend, add it to 299, then carry on: 2996 / 523

Step 5:
523 goes into 2996 5 times with a remainder of 381.
Record the quotient 5 as the next digit in the result. 
Result so far: 155.0
Subtracting 2615 from 2996 leaves us with 381.
Grab the next digit (5) from the dividend, add it to 381, then carry on: 3815 / 523

Moving on to step 6:
523 goes into 3815 7 times with a remainder of 154.
Record the quotient 7 as the next digit in the result. 
Result so far: 1557.0
The remainder is 154 after subtracting 3661 from 3815.
Bring next digit (7) of the dividend behind the 154 and repeat the process: 1547 / 523

Let's proceed to step 7:
When dividing 1547 by 523, we get 2 with a remainder of 501.
Write down 2 as next digit of the result. 
Result so far: 15572.0
Deduct 1046 from 1547 and we're left with 501.
Include the next digit (7) from the dividend after 501, then repeat: 5017 / 523

On to step 8:
If we divide 5017 by 523, we get 9 and a remainder of 310.
Write down 9 as next digit of the result. 
Result so far: 155729.0
Deduct 4707 from 5017 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Advancing to step 9:
When dividing 3100 by 523, we get 5 with a remainder of 485.
The number 5 becomes the next digit in our result. 
Result so far: 155729.5
Subtracting 2615 from 3100 leaves us with 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Let's proceed to step 10:
When dividing 4850 by 523, we get 9 with a remainder of 143.
Record the quotient 9 as the next digit in the result. 
Result so far: 155729.59
Subtracting 4707 from 4850 leaves us with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Moving on to step 11:
If we divide 1430 by 523, we get 2 and a remainder of 384.
Use 2 as the next digit of our solution. 
Result so far: 155729.592
If we subtract 1046 from 1430, we get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Let's proceed to step 12:
523 goes into 3840 7 times with a remainder of 179.
Write down 7 as next digit of the result. 
Result so far: 155729.5927
The remainder is 179 after subtracting 3661 from 3840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Going ahead to step 13:
523 can be fit into 1790 3 times, resulting in a remainder of 221.
The next digit of our result is 3. 
Result so far: 155729.59273
Deduct 1569 from 1790 and we're left with 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Advancing to step 14:
523 goes into 2210 4 times with a remainder of 118.
The next digit of our result is 4. 
Result so far: 155729.592734
Subtracting 2092 from 2210 leaves us with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Step 15:
523 goes into 1180 2 times with a remainder of 134.
Use 2 as the next digit of our solution. 
Result so far: 155729.5927342
Subtracting 1046 from 1180 leaves us with 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Let's proceed to step 16:
If we divide 1340 by 523, we get 2 and a remainder of 294.
Put 2 as the next digit of the answer. 
Result so far: 155729.59273422
The remainder is 294 after subtracting 1046 from 1340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

The final result is 155729.59273422 with a remainder of 2.94e-07.