Let's divide 894274 by 21
The aim is to understand the frequency of 21 in 894274.

Moving on to step 1:
When dividing 8 by 21, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 21

Step 2:
21 can be fit into 89 4 times, resulting in a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 84 from 89, we get 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 21

Moving on to step 3:
The number 21 fits into 54 2 times, leaving a remainder of 12.
The next digit of our result is 2. 
Result so far: 42.0
Subtracting 42 from 54 leaves us with 12.
Grab the next digit (2) from the dividend, add it to 12, then carry on: 122 / 21

Going ahead to step 4:
21 goes into 122 5 times with a remainder of 17.
The number 5 becomes the next digit in our result. 
Result so far: 425.0
Subtract 105 from 122 to get 17.
Include the next digit (7) from the dividend after 17, then repeat: 177 / 21

Moving on to step 5:
21 goes into 177 8 times with a remainder of 9.
The number 8 becomes the next digit in our result. 
Result so far: 4258.0
The remainder is 9 after subtracting 168 from 177.
Grab the next digit (4) from the dividend, add it to 9, then carry on: 94 / 21

Let's proceed to step 6:
When dividing 94 by 21, we get 4 with a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 42584.0
Subtracting 84 from 94 leaves us 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.

Advancing to step 7:
100 divided by 21 is 4 with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 42584.4
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
21 can be fit into 160 7 times, resulting in a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 42584.47
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 9:
21 can be fit into 130 6 times, resulting in a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 42584.476
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.

Advancing to step 10:
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: 42584.4761
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 11:
If we divide 190 by 21, we get 9 and a remainder of 1.
The next digit of our result is 9. 
Result so far: 42584.47619
If we take 189 away from 190, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 12:
If we divide 10 by 21, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 42584.47619
Subtracting 0 from 10 leaves us 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.

Going ahead to step 13:
21 goes into 100 4 times with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 42584.4761904
If we subtract 84 from 100, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 14:
If we divide 160 by 21, we get 7 and a remainder of 13.
The next digit of our result is 7. 
Result so far: 42584.47619047
If we subtract 147 from 160, 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.

The final result is 42584.47619047 with a remainder of 1.3e-08.