We look at the division of 21257396 by 897 
We want to figure out the number of times 21257396 can be divided by 897.

On to step 1:
2 divided by 897 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 897

Going ahead to step 2:
If we divide 21 by 897, we get 0 and a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Bring next digit (2) of the dividend behind the 21 and repeat the process: 212 / 897

Moving on to step 3:
If we divide 212 by 897, we get 0 and a remainder of 212.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 212, we get 212.
Append the next digit (5) from the dividend to 212 and continue with: 2125 / 897

On to step 4:
897 goes into 2125 2 times with a remainder of 331.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 331 after subtracting 1794 from 2125.
Include the next digit (7) from the dividend after 331, then repeat: 3317 / 897

On to step 5:
If we divide 3317 by 897, we get 3 and a remainder of 626.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
Subtracting 2691 from 3317 leaves us with 626.
Grab the next digit (3) from the dividend, add it to 626, then carry on: 6263 / 897

Step 6:
897 goes into 6263 6 times with a remainder of 881.
The number 6 becomes the next digit in our result. 
Result so far: 236.0
If we take 5382 away from 6263, we end up with 881.
Append the next digit (9) from the dividend to 881 and continue with: 8819 / 897

Step 7:
897 goes into 8819 9 times with a remainder of 746.
Use 9 as the next digit of our solution. 
Result so far: 2369.0
If we subtract 8073 from 8819, we get 746.
Fetch the next digit (6) from the dividend, attach it to 746 and continue: 7466 / 897

Going ahead to step 8:
When dividing 7466 by 897, we get 8 with a remainder of 290.
Put 8 as the next digit of the answer. 
Result so far: 23698.0
Subtracting 7176 from 7466 leaves us with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Step 9:
897 can be fit into 2900 3 times, resulting in a remainder of 209.
The next digit of our result is 3. 
Result so far: 23698.3
Deduct 2691 from 2900 and we're left with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Let's proceed to step 10:
The number 897 fits into 2090 2 times, leaving a remainder of 296.
The number 2 becomes the next digit in our result. 
Result so far: 23698.32
Subtract 1794 from 2090 to get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Advancing to step 11:
897 can be fit into 2960 3 times, resulting in a remainder of 269.
The number 3 becomes the next digit in our result. 
Result so far: 23698.323
Deduct 2691 from 2960 and we're left with 269.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2690, and continue the process.

Let's proceed to step 12:
The number 897 fits into 2690 2 times, leaving a remainder of 896.
The next digit of our result is 2. 
Result so far: 23698.3232
If we subtract 1794 from 2690, we get 896.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8960, and continue the process.

Let's proceed to step 13:
897 goes into 8960 9 times with a remainder of 887.
The number 9 becomes the next digit in our result. 
Result so far: 23698.32329
The remainder is 887 after subtracting 8073 from 8960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8870, and continue the process.

Moving on to step 14:
8870 divided by 897 is 9 with a remainder of 797.
Use 9 as the next digit of our solution. 
Result so far: 23698.323299
If we take 8073 away from 8870, we end up with 797.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7970, and continue the process.

Our division results in 23698.323299 with a remaining 7.97e-05.