82724133 ÷ 645 
The aim is to understand the frequency of 645 in 82724133.

Moving on to step 1:
When dividing 8 by 645, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 645

Going ahead to step 2:
645 goes into 82 0 times with a remainder of 82.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 82 and we're left with 82.
Bring next digit (7) of the dividend behind the 82 and repeat the process: 827 / 645

Going ahead to step 3:
645 goes into 827 1 times with a remainder of 182.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 645 from 827 leaves us with 182.
Append the next digit (2) from the dividend to 182 and continue with: 1822 / 645

Let's proceed to step 4:
1822 divided by 645 is 2 with a remainder of 532.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 1290 from 1822, we get 532.
Bring next digit (4) of the dividend behind the 532 and repeat the process: 5324 / 645

Advancing to step 5:
The number 645 fits into 5324 8 times, leaving a remainder of 164.
Use 8 as the next digit of our solution. 
Result so far: 128.0
Subtract 5160 from 5324 to get 164.
Grab the next digit (1) from the dividend, add it to 164, then carry on: 1641 / 645

On to step 6:
The number 645 fits into 1641 2 times, leaving a remainder of 351.
Use 2 as the next digit of our solution. 
Result so far: 1282.0
Subtract 1290 from 1641 to get 351.
Append the next digit (3) from the dividend to 351 and continue with: 3513 / 645

Moving on to step 7:
If we divide 3513 by 645, we get 5 and a remainder of 288.
The next digit of our result is 5. 
Result so far: 12825.0
If we subtract 3225 from 3513, we get 288.
Fetch the next digit (3) from the dividend, attach it to 288 and continue: 2883 / 645

On to step 8:
If we divide 2883 by 645, we get 4 and a remainder of 303.
Write down 4 as next digit of the result. 
Result so far: 128254.0
Subtracting 2580 from 2883 leaves us with 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Let's proceed to step 9:
If we divide 3030 by 645, we get 4 and a remainder of 450.
The next digit of our result is 4. 
Result so far: 128254.4
The remainder is 450 after subtracting 2580 from 3030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

On to step 10:
645 goes into 4500 6 times with a remainder of 630.
Put 6 as the next digit of the answer. 
Result so far: 128254.46
Subtracting 3870 from 4500 leaves us with 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Advancing to step 11:
645 goes into 6300 9 times with a remainder of 495.
Put 9 as the next digit of the answer. 
Result so far: 128254.469
If we take 5805 away from 6300, we end up with 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Going ahead to step 12:
4950 divided by 645 is 7 with a remainder of 435.
The number 7 becomes the next digit in our result. 
Result so far: 128254.4697
The remainder is 435 after subtracting 4515 from 4950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

Step 13:
The number 645 fits into 4350 6 times, leaving a remainder of 480.
Use 6 as the next digit of our solution. 
Result so far: 128254.46976
Subtracting 3870 from 4350 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 14:
The number 645 fits into 4800 7 times, leaving a remainder of 285.
Write down 7 as next digit of the result. 
Result so far: 128254.469767
The remainder is 285 after subtracting 4515 from 4800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Moving on to step 15:
645 can be fit into 2850 4 times, resulting in a remainder of 270.
Write down 4 as next digit of the result. 
Result so far: 128254.4697674
Subtract 2580 from 2850 to get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Step 16:
2700 divided by 645 is 4 with a remainder of 120.
Use 4 as the next digit of our solution. 
Result so far: 128254.46976744
The remainder is 120 after subtracting 2580 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

The final outcome is 128254.46976744, with a leftover of 1.2e-07.