21123384 divided by 539 
We want to figure out the number of times 21123384 can be divided by 539.

Going ahead to step 1:
539 goes into 2 0 times with 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.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 539

Moving on to step 2:
539 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
If we take 0 away from 21, we end up with 21.
Take the next digit (1) from the dividend and append it to 21, then repeat: 211 / 539

Going ahead to step 3:
539 goes into 211 0 times with a remainder of 211.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 211, we get 211.
Bring next digit (2) of the dividend behind the 211 and repeat the process: 2112 / 539

Advancing to step 4:
When dividing 2112 by 539, we get 3 with a remainder of 495.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 1617 from 2112 and we're left with 495.
Fetch the next digit (3) from the dividend, attach it to 495 and continue: 4953 / 539

Advancing to step 5:
4953 divided by 539 is 9 with a remainder of 102.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
Subtract 4851 from 4953 to get 102.
Grab the next digit (3) from the dividend, add it to 102, then carry on: 1023 / 539

Step 6:
539 can be fit into 1023 1 times, resulting in a remainder of 484.
Put 1 as the next digit of the answer. 
Result so far: 391.0
If we take 539 away from 1023, we end up with 484.
Bring next digit (8) of the dividend behind the 484 and repeat the process: 4848 / 539

On to step 7:
539 goes into 4848 8 times with a remainder of 536.
Record the quotient 8 as the next digit in the result. 
Result so far: 3918.0
If we subtract 4312 from 4848, we get 536.
Grab the next digit (4) from the dividend, add it to 536, then carry on: 5364 / 539

On to step 8:
If we divide 5364 by 539, we get 9 and a remainder of 513.
Put 9 as the next digit of the answer. 
Result so far: 39189.0
If we take 4851 away from 5364, we end up with 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

Step 9:
The number 539 fits into 5130 9 times, leaving a remainder of 279.
Put 9 as the next digit of the answer. 
Result so far: 39189.9
The remainder is 279 after subtracting 4851 from 5130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Let's proceed to step 10:
If we divide 2790 by 539, we get 5 and a remainder of 95.
The next digit of our result is 5. 
Result so far: 39189.95
Deduct 2695 from 2790 and we're left with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

On to step 11:
950 divided by 539 is 1 with a remainder of 411.
Write down 1 as next digit of the result. 
Result so far: 39189.951
If we take 539 away from 950, we end up with 411.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4110, and continue the process.

Step 12:
539 goes into 4110 7 times with a remainder of 337.
Record the quotient 7 as the next digit in the result. 
Result so far: 39189.9517
Deduct 3773 from 4110 and we're left with 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Advancing to step 13:
The number 539 fits into 3370 6 times, leaving a remainder of 136.
Write down 6 as next digit of the result. 
Result so far: 39189.95176
Subtracting 3234 from 3370 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Going ahead to step 14:
539 goes into 1360 2 times with a remainder of 282.
Write down 2 as next digit of the result. 
Result so far: 39189.951762
Deduct 1078 from 1360 and we're left with 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Let's proceed to step 15:
2820 divided by 539 is 5 with a remainder of 125.
Put 5 as the next digit of the answer. 
Result so far: 39189.9517625
Deduct 2695 from 2820 and we're left with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Going ahead to step 16:
If we divide 1250 by 539, we get 2 and a remainder of 172.
Put 2 as the next digit of the answer. 
Result so far: 39189.95176252
Subtracting 1078 from 1250 leaves us with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

The final result is 39189.95176252 with a remainder of 1.72e-07.