32666248 ÷ 21 
The aim is to understand the frequency of 21 in 32666248.

Moving on to step 1:
The number 21 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 21

Advancing to step 2:
If we divide 32 by 21, we get 1 and a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 21 from 32 to get 11.
Include the next digit (6) from the dividend after 11, then repeat: 116 / 21

Moving on to step 3:
21 goes into 116 5 times with a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we subtract 105 from 116, we get 11.
Append the next digit (6) from the dividend to 11 and continue with: 116 / 21

Going ahead to step 4:
When dividing 116 by 21, we get 5 with a remainder of 11.
Record the quotient 5 as the next digit in the result. 
Result so far: 155.0
If we subtract 105 from 116, we get 11.
Append the next digit (6) from the dividend to 11 and continue with: 116 / 21

On to step 5:
21 goes into 116 5 times with a remainder of 11.
Write down 5 as next digit of the result. 
Result so far: 1555.0
If we take 105 away from 116, we end up with 11.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 21

On to step 6:
21 can be fit into 112 5 times, resulting in a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 15555.0
If we subtract 105 from 112, we get 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 21

Going ahead to step 7:
21 can be fit into 74 3 times, resulting in a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 155553.0
Subtract 63 from 74 to get 11.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 21

Going ahead to step 8:
21 can be fit into 118 5 times, resulting in a remainder of 13.
Use 5 as the next digit of our solution. 
Result so far: 1555535.0
If we subtract 105 from 118, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 9:
21 goes into 130 6 times with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 1555535.6
Deduct 126 from 130 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 10:
If we divide 40 by 21, we get 1 and a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 1555535.61
Subtract 21 from 40 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 11:
When dividing 190 by 21, we get 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 1555535.619
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 12:
21 goes into 10 0 times with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 1555535.619
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 13:
21 can be fit into 100 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 1555535.61904
The remainder is 16 after subtracting 84 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 14:
21 goes into 160 7 times with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 1555535.619047
If we take 147 away from 160, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 15:
130 divided by 21 is 6 with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 1555535.6190476
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 16:
When dividing 40 by 21, we get 1 with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 1555535.61904761
Subtract 21 from 40 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final result is 1555535.61904761 with a remainder of 1.9e-08.