Let's divide 995361 by 21
The aim is to understand the frequency of 21 in 995361.

Step 1:
21 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 21

On to step 2:
21 can be fit into 99 4 times, resulting in a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 15 after subtracting 84 from 99.
Grab the next digit (5) from the dividend, add it to 15, then carry on: 155 / 21

Let's proceed to step 3:
If we divide 155 by 21, we get 7 and a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 47.0
If we take 147 away from 155, we end up with 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 21

Going ahead to step 4:
21 goes into 83 3 times with a remainder of 20.
The next digit of our result is 3. 
Result so far: 473.0
Deduct 63 from 83 and we're left with 20.
Take the next digit (6) from the dividend and append it to 20, then repeat: 206 / 21

Step 5:
21 goes into 206 9 times with a remainder of 17.
The next digit of our result is 9. 
Result so far: 4739.0
If we subtract 189 from 206, we get 17.
Append the next digit (1) from the dividend to 17 and continue with: 171 / 21

Let's proceed to step 6:
The number 21 fits into 171 8 times, leaving a remainder of 3.
The next digit of our result is 8. 
Result so far: 47398.0
Deduct 168 from 171 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
30 divided by 21 is 1 with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 47398.1
The remainder is 9 after subtracting 21 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 8:
The number 21 fits into 90 4 times, leaving a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 47398.14
Subtract 84 from 90 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
60 divided by 21 is 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 47398.142
Subtracting 42 from 60 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 10:
When dividing 180 by 21, we get 8 with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 47398.1428
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 11:
21 goes into 120 5 times with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 47398.14285
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 12:
150 divided by 21 is 7 with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 47398.142857
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 13:
The number 21 fits into 30 1 times, leaving a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 47398.1428571
Subtracting 21 from 30 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 14:
The number 21 fits into 90 4 times, leaving a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 47398.14285714
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 47398.14285714, with a leftover of 6e-09.