20924103 ÷ 643 
The aim is to understand the frequency of 643 in 20924103.

Moving on to step 1:
643 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 643

On to step 2:
643 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Bring next digit (9) of the dividend behind the 20 and repeat the process: 209 / 643

Going ahead to step 3:
209 divided by 643 is 0 with a remainder of 209.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 209 to get 209.
Append the next digit (2) from the dividend to 209 and continue with: 2092 / 643

Let's proceed to step 4:
When dividing 2092 by 643, we get 3 with a remainder of 163.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 163 after subtracting 1929 from 2092.
Grab the next digit (4) from the dividend, add it to 163, then carry on: 1634 / 643

Let's proceed to step 5:
The number 643 fits into 1634 2 times, leaving a remainder of 348.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
Deduct 1286 from 1634 and we're left with 348.
Grab the next digit (1) from the dividend, add it to 348, then carry on: 3481 / 643

On to step 6:
When dividing 3481 by 643, we get 5 with a remainder of 266.
Record the quotient 5 as the next digit in the result. 
Result so far: 325.0
Deduct 3215 from 3481 and we're left with 266.
Include the next digit (0) from the dividend after 266, then repeat: 2660 / 643

Let's proceed to step 7:
The number 643 fits into 2660 4 times, leaving a remainder of 88.
The number 4 becomes the next digit in our result. 
Result so far: 3254.0
The remainder is 88 after subtracting 2572 from 2660.
Fetch the next digit (3) from the dividend, attach it to 88 and continue: 883 / 643

Let's proceed to step 8:
If we divide 883 by 643, we get 1 and a remainder of 240.
The next digit of our result is 1. 
Result so far: 32541.0
The remainder is 240 after subtracting 643 from 883.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 9:
If we divide 2400 by 643, we get 3 and a remainder of 471.
Put 3 as the next digit of the answer. 
Result so far: 32541.3
Deduct 1929 from 2400 and we're left with 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

Step 10:
When dividing 4710 by 643, we get 7 with a remainder of 209.
The number 7 becomes the next digit in our result. 
Result so far: 32541.37
Subtract 4501 from 4710 to get 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Going ahead to step 11:
The number 643 fits into 2090 3 times, leaving a remainder of 161.
The number 3 becomes the next digit in our result. 
Result so far: 32541.373
Subtracting 1929 from 2090 leaves us with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Going ahead to step 12:
The number 643 fits into 1610 2 times, leaving a remainder of 324.
The next digit of our result is 2. 
Result so far: 32541.3732
Subtracting 1286 from 1610 leaves us with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Moving on to step 13:
When dividing 3240 by 643, we get 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 32541.37325
The remainder is 25 after subtracting 3215 from 3240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 14:
643 goes into 250 0 times with a remainder of 250.
Use 0 as the next digit of our solution. 
Result so far: 32541.37325
Subtract 0 from 250 to get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 15:
643 can be fit into 2500 3 times, resulting in a remainder of 571.
Record the quotient 3 as the next digit in the result. 
Result so far: 32541.3732503
If we subtract 1929 from 2500, we get 571.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5710, and continue the process.

On to step 16:
The number 643 fits into 5710 8 times, leaving a remainder of 566.
Record the quotient 8 as the next digit in the result. 
Result so far: 32541.37325038
If we subtract 5144 from 5710, we get 566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5660, and continue the process.

In conclusion, the division gives 32541.37325038 with a balance of 5.66e-07.