965895 divided by 21 
The aim is to understand the frequency of 21 in 965895.

On to step 1:
21 can be fit into 9 0 times, resulting in a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (6) from the dividend and append it to 9, then repeat: 96 / 21

Step 2:
When dividing 96 by 21, we get 4 with a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 84 away from 96, we end up with 12.
Append the next digit (5) from the dividend to 12 and continue with: 125 / 21

Advancing to step 3:
21 can be fit into 125 5 times, resulting in a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 45.0
Subtract 105 from 125 to get 20.
Bring next digit (8) of the dividend behind the 20 and repeat the process: 208 / 21

Going ahead to step 4:
The number 21 fits into 208 9 times, leaving a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 459.0
If we subtract 189 from 208, we get 19.
Bring next digit (9) of the dividend behind the 19 and repeat the process: 199 / 21

Advancing to step 5:
199 divided by 21 is 9 with a remainder of 10.
The next digit of our result is 9. 
Result so far: 4599.0
If we subtract 189 from 199, we get 10.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 21

Going ahead to step 6:
If we divide 105 by 21, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 45995.0
Deduct 105 from 105 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
When dividing 0 by 21, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 45995.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
When dividing 0 by 21, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 45995.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 45995.0, and the remainder is 0.0.