We look at the division of 21034138 by 899 
We want to divide 21034138 by 899.

Moving on to step 1:
When dividing 2 by 899, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 899

Moving on to step 2:
899 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 899

On to step 3:
When dividing 210 by 899, we get 0 with a remainder of 210.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 210 and we're left with 210.
Fetch the next digit (3) from the dividend, attach it to 210 and continue: 2103 / 899

On to step 4:
When dividing 2103 by 899, we get 2 with a remainder of 305.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 1798 from 2103 and we're left with 305.
Bring next digit (4) of the dividend behind the 305 and repeat the process: 3054 / 899

On to step 5:
899 can be fit into 3054 3 times, resulting in a remainder of 357.
Use 3 as the next digit of our solution. 
Result so far: 23.0
If we subtract 2697 from 3054, we get 357.
Grab the next digit (1) from the dividend, add it to 357, then carry on: 3571 / 899

On to step 6:
The number 899 fits into 3571 3 times, leaving a remainder of 874.
Write down 3 as next digit of the result. 
Result so far: 233.0
Subtracting 2697 from 3571 leaves us with 874.
Grab the next digit (3) from the dividend, add it to 874, then carry on: 8743 / 899

On to step 7:
899 goes into 8743 9 times with a remainder of 652.
The number 9 becomes the next digit in our result. 
Result so far: 2339.0
If we subtract 8091 from 8743, we get 652.
Append the next digit (8) from the dividend to 652 and continue with: 6528 / 899

Advancing to step 8:
899 can be fit into 6528 7 times, resulting in a remainder of 235.
The number 7 becomes the next digit in our result. 
Result so far: 23397.0
If we subtract 6293 from 6528, we get 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Advancing to step 9:
899 can be fit into 2350 2 times, resulting in a remainder of 552.
The number 2 becomes the next digit in our result. 
Result so far: 23397.2
If we subtract 1798 from 2350, we get 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Let's proceed to step 10:
899 goes into 5520 6 times with a remainder of 126.
The number 6 becomes the next digit in our result. 
Result so far: 23397.26
Subtract 5394 from 5520 to get 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Advancing to step 11:
The number 899 fits into 1260 1 times, leaving a remainder of 361.
Write down 1 as next digit of the result. 
Result so far: 23397.261
Subtracting 899 from 1260 leaves us with 361.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3610, and continue the process.

Let's proceed to step 12:
899 goes into 3610 4 times with a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 23397.2614
If we take 3596 away from 3610, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 13:
The number 899 fits into 140 0 times, leaving a remainder of 140.
Record the quotient 0 as the next digit in the result. 
Result so far: 23397.2614
The remainder is 140 after subtracting 0 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 14:
When dividing 1400 by 899, we get 1 with a remainder of 501.
The next digit of our result is 1. 
Result so far: 23397.261401
If we take 899 away from 1400, we end up with 501.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5010, and continue the process.

Step 15:
5010 divided by 899 is 5 with a remainder of 515.
Write down 5 as next digit of the result. 
Result so far: 23397.2614015
Subtract 4495 from 5010 to get 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Moving on to step 16:
899 goes into 5150 5 times with a remainder of 655.
The number 5 becomes the next digit in our result. 
Result so far: 23397.26140155
If we take 4495 away from 5150, we end up with 655.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

The final result is 23397.26140155 with a remainder of 6.55e-07.