We're dividing 21325161 by 869 
Let's see how many times 869 fits into 21325161.

Advancing to step 1:
869 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 869

Step 2:
The number 869 fits into 21 0 times, leaving a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Bring next digit (3) of the dividend behind the 21 and repeat the process: 213 / 869

Let's proceed to step 3:
When dividing 213 by 869, we get 0 with a remainder of 213.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 213 to get 213.
Fetch the next digit (2) from the dividend, attach it to 213 and continue: 2132 / 869

On to step 4:
If we divide 2132 by 869, we get 2 and a remainder of 394.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 1738 from 2132, we get 394.
Fetch the next digit (5) from the dividend, attach it to 394 and continue: 3945 / 869

On to step 5:
The number 869 fits into 3945 4 times, leaving a remainder of 469.
Use 4 as the next digit of our solution. 
Result so far: 24.0
If we take 3476 away from 3945, we end up with 469.
Fetch the next digit (1) from the dividend, attach it to 469 and continue: 4691 / 869

Step 6:
869 can be fit into 4691 5 times, resulting in a remainder of 346.
Use 5 as the next digit of our solution. 
Result so far: 245.0
Subtracting 4345 from 4691 leaves us with 346.
Grab the next digit (6) from the dividend, add it to 346, then carry on: 3466 / 869

Going ahead to step 7:
869 can be fit into 3466 3 times, resulting in a remainder of 859.
Record the quotient 3 as the next digit in the result. 
Result so far: 2453.0
Deduct 2607 from 3466 and we're left with 859.
Append the next digit (1) from the dividend to 859 and continue with: 8591 / 869

Advancing to step 8:
If we divide 8591 by 869, we get 9 and a remainder of 770.
The number 9 becomes the next digit in our result. 
Result so far: 24539.0
Deduct 7821 from 8591 and we're left with 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7700, and continue the process.

Let's proceed to step 9:
7700 divided by 869 is 8 with a remainder of 748.
Put 8 as the next digit of the answer. 
Result so far: 24539.8
If we subtract 6952 from 7700, we get 748.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

On to step 10:
If we divide 7480 by 869, we get 8 and a remainder of 528.
Record the quotient 8 as the next digit in the result. 
Result so far: 24539.88
If we take 6952 away from 7480, we end up with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

The quotient of the division is 24539.88, and the remainder is 0.528.