Let's divide 20972339 by 642
The aim is to understand the frequency of 642 in 20972339.

Going ahead to step 1:
If we divide 2 by 642, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 642

On to step 2:
642 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Grab the next digit (9) from the dividend, add it to 20, then carry on: 209 / 642

Let's proceed to step 3:
642 can be fit into 209 0 times, resulting in a remainder of 209.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 209 to get 209.
Fetch the next digit (7) from the dividend, attach it to 209 and continue: 2097 / 642

Advancing to step 4:
642 can be fit into 2097 3 times, resulting in a remainder of 171.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 1926 from 2097 to get 171.
Fetch the next digit (2) from the dividend, attach it to 171 and continue: 1712 / 642

Let's proceed to step 5:
642 goes into 1712 2 times with a remainder of 428.
Put 2 as the next digit of the answer. 
Result so far: 32.0
If we subtract 1284 from 1712, we get 428.
Take the next digit (3) from the dividend and append it to 428, then repeat: 4283 / 642

On to step 6:
642 can be fit into 4283 6 times, resulting in a remainder of 431.
Record the quotient 6 as the next digit in the result. 
Result so far: 326.0
The remainder is 431 after subtracting 3852 from 4283.
Bring next digit (3) of the dividend behind the 431 and repeat the process: 4313 / 642

On to step 7:
642 can be fit into 4313 6 times, resulting in a remainder of 461.
Write down 6 as next digit of the result. 
Result so far: 3266.0
If we subtract 3852 from 4313, we get 461.
Append the next digit (9) from the dividend to 461 and continue with: 4619 / 642

On to step 8:
The number 642 fits into 4619 7 times, leaving a remainder of 125.
The next digit of our result is 7. 
Result so far: 32667.0
If we take 4494 away from 4619, we end up with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Going ahead to step 9:
The number 642 fits into 1250 1 times, leaving a remainder of 608.
The number 1 becomes the next digit in our result. 
Result so far: 32667.1
If we take 642 away from 1250, we end up with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

On to step 10:
6080 divided by 642 is 9 with a remainder of 302.
Record the quotient 9 as the next digit in the result. 
Result so far: 32667.19
The remainder is 302 after subtracting 5778 from 6080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Advancing to step 11:
3020 divided by 642 is 4 with a remainder of 452.
Put 4 as the next digit of the answer. 
Result so far: 32667.194
If we subtract 2568 from 3020, we get 452.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

Advancing to step 12:
When dividing 4520 by 642, we get 7 with a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 32667.1947
If we subtract 4494 from 4520, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 13:
642 goes into 260 0 times with a remainder of 260.
Record the quotient 0 as the next digit in the result. 
Result so far: 32667.1947
Subtracting 0 from 260 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 14:
The number 642 fits into 2600 4 times, leaving a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 32667.194704
The remainder is 32 after subtracting 2568 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 15:
642 goes into 320 0 times with a remainder of 320.
The next digit of our result is 0. 
Result so far: 32667.194704
If we subtract 0 from 320, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 16:
If we divide 3200 by 642, we get 4 and a remainder of 632.
The number 4 becomes the next digit in our result. 
Result so far: 32667.19470404
The remainder is 632 after subtracting 2568 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

The final result is 32667.19470404 with a remainder of 6.32e-07.