Let's divide 15792848 by 645
The aim is to understand the frequency of 645 in 15792848.

Going ahead to step 1:
645 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 645

Advancing to step 2:
The number 645 fits into 15 0 times, leaving a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Include the next digit (7) from the dividend after 15, then repeat: 157 / 645

Advancing to step 3:
The number 645 fits into 157 0 times, leaving a remainder of 157.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 157, we end up with 157.
Bring next digit (9) of the dividend behind the 157 and repeat the process: 1579 / 645

Going ahead to step 4:
1579 divided by 645 is 2 with a remainder of 289.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 1290 from 1579, we get 289.
Grab the next digit (2) from the dividend, add it to 289, then carry on: 2892 / 645

On to step 5:
645 can be fit into 2892 4 times, resulting in a remainder of 312.
Put 4 as the next digit of the answer. 
Result so far: 24.0
If we subtract 2580 from 2892, we get 312.
Fetch the next digit (8) from the dividend, attach it to 312 and continue: 3128 / 645

Going ahead to step 6:
The number 645 fits into 3128 4 times, leaving a remainder of 548.
Record the quotient 4 as the next digit in the result. 
Result so far: 244.0
If we take 2580 away from 3128, we end up with 548.
Bring next digit (4) of the dividend behind the 548 and repeat the process: 5484 / 645

Step 7:
If we divide 5484 by 645, we get 8 and a remainder of 324.
The next digit of our result is 8. 
Result so far: 2448.0
The remainder is 324 after subtracting 5160 from 5484.
Grab the next digit (8) from the dividend, add it to 324, then carry on: 3248 / 645

Moving on to step 8:
The number 645 fits into 3248 5 times, leaving a remainder of 23.
The next digit of our result is 5. 
Result so far: 24485.0
Subtract 3225 from 3248 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 9:
The number 645 fits into 230 0 times, leaving a remainder of 230.
Use 0 as the next digit of our solution. 
Result so far: 24485.0
The remainder is 230 after subtracting 0 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 10:
2300 divided by 645 is 3 with a remainder of 365.
The number 3 becomes the next digit in our result. 
Result so far: 24485.03
Subtracting 1935 from 2300 leaves us with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Let's proceed to step 11:
645 goes into 3650 5 times with a remainder of 425.
Use 5 as the next digit of our solution. 
Result so far: 24485.035
Subtracting 3225 from 3650 leaves us with 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Advancing to step 12:
If we divide 4250 by 645, we get 6 and a remainder of 380.
Use 6 as the next digit of our solution. 
Result so far: 24485.0356
Deduct 3870 from 4250 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Step 13:
3800 divided by 645 is 5 with a remainder of 575.
Record the quotient 5 as the next digit in the result. 
Result so far: 24485.03565
The remainder is 575 after subtracting 3225 from 3800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

On to step 14:
645 goes into 5750 8 times with a remainder of 590.
The next digit of our result is 8. 
Result so far: 24485.035658
Subtract 5160 from 5750 to get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Advancing to step 15:
645 can be fit into 5900 9 times, resulting in a remainder of 95.
Record the quotient 9 as the next digit in the result. 
Result so far: 24485.0356589
Subtracting 5805 from 5900 leaves us with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

On to step 16:
The number 645 fits into 950 1 times, leaving a remainder of 305.
Record the quotient 1 as the next digit in the result. 
Result so far: 24485.03565891
The remainder is 305 after subtracting 645 from 950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Our division results in 24485.03565891 with a remaining 3.05e-07.