We're dividing 21397812 by 553 
We want to divide 21397812 by 553.

On to step 1:
When dividing 2 by 553, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 553

Step 2:
553 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 553

Let's proceed to step 3:
553 can be fit into 213 0 times, resulting in a remainder of 213.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 213 leaves us with 213.
Fetch the next digit (9) from the dividend, attach it to 213 and continue: 2139 / 553

Let's proceed to step 4:
When dividing 2139 by 553, we get 3 with a remainder of 480.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 1659 away from 2139, we end up with 480.
Append the next digit (7) from the dividend to 480 and continue with: 4807 / 553

Advancing to step 5:
If we divide 4807 by 553, we get 8 and a remainder of 383.
Use 8 as the next digit of our solution. 
Result so far: 38.0
Subtract 4424 from 4807 to get 383.
Include the next digit (8) from the dividend after 383, then repeat: 3838 / 553

On to step 6:
When dividing 3838 by 553, we get 6 with a remainder of 520.
Use 6 as the next digit of our solution. 
Result so far: 386.0
Subtracting 3318 from 3838 leaves us with 520.
Grab the next digit (1) from the dividend, add it to 520, then carry on: 5201 / 553

Step 7:
5201 divided by 553 is 9 with a remainder of 224.
Put 9 as the next digit of the answer. 
Result so far: 3869.0
Subtracting 4977 from 5201 leaves us with 224.
Append the next digit (2) from the dividend to 224 and continue with: 2242 / 553

Step 8:
If we divide 2242 by 553, we get 4 and a remainder of 30.
Write down 4 as next digit of the result. 
Result so far: 38694.0
If we subtract 2212 from 2242, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 9:
553 goes into 300 0 times with a remainder of 300.
The next digit of our result is 0. 
Result so far: 38694.0
Subtract 0 from 300 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 10:
3000 divided by 553 is 5 with a remainder of 235.
Put 5 as the next digit of the answer. 
Result so far: 38694.05
Deduct 2765 from 3000 and we're left with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Going ahead to step 11:
If we divide 2350 by 553, we get 4 and a remainder of 138.
Record the quotient 4 as the next digit in the result. 
Result so far: 38694.054
If we subtract 2212 from 2350, we get 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Let's proceed to step 12:
If we divide 1380 by 553, we get 2 and a remainder of 274.
The number 2 becomes the next digit in our result. 
Result so far: 38694.0542
Subtracting 1106 from 1380 leaves us with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Moving on to step 13:
The number 553 fits into 2740 4 times, leaving a remainder of 528.
Record the quotient 4 as the next digit in the result. 
Result so far: 38694.05424
If we subtract 2212 from 2740, we get 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

On to step 14:
The number 553 fits into 5280 9 times, leaving a remainder of 303.
Put 9 as the next digit of the answer. 
Result so far: 38694.054249
Subtracting 4977 from 5280 leaves us with 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Advancing to step 15:
553 can be fit into 3030 5 times, resulting in a remainder of 265.
The number 5 becomes the next digit in our result. 
Result so far: 38694.0542495
Deduct 2765 from 3030 and we're left with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Going ahead to step 16:
If we divide 2650 by 553, we get 4 and a remainder of 438.
Write down 4 as next digit of the result. 
Result so far: 38694.05424954
The remainder is 438 after subtracting 2212 from 2650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

In conclusion, the division gives 38694.05424954 with a balance of 4.38e-07.