Let's divide 21399471 by 754
We're looking to find how many times 754 goes into 21399471.

Advancing to step 1:
The number 754 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 754

Advancing to step 2:
The number 754 fits into 21 0 times, leaving a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Take the next digit (3) from the dividend and append it to 21, then repeat: 213 / 754

On to step 3:
754 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
Deduct 0 from 213 and we're left with 213.
Bring next digit (9) of the dividend behind the 213 and repeat the process: 2139 / 754

Let's proceed to step 4:
If we divide 2139 by 754, we get 2 and a remainder of 631.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 1508 from 2139 and we're left with 631.
Fetch the next digit (9) from the dividend, attach it to 631 and continue: 6319 / 754

On to step 5:
754 can be fit into 6319 8 times, resulting in a remainder of 287.
The next digit of our result is 8. 
Result so far: 28.0
Deduct 6032 from 6319 and we're left with 287.
Take the next digit (4) from the dividend and append it to 287, then repeat: 2874 / 754

Step 6:
2874 divided by 754 is 3 with a remainder of 612.
The number 3 becomes the next digit in our result. 
Result so far: 283.0
If we subtract 2262 from 2874, we get 612.
Fetch the next digit (7) from the dividend, attach it to 612 and continue: 6127 / 754

Let's proceed to step 7:
6127 divided by 754 is 8 with a remainder of 95.
Write down 8 as next digit of the result. 
Result so far: 2838.0
Subtract 6032 from 6127 to get 95.
Grab the next digit (1) from the dividend, add it to 95, then carry on: 951 / 754

Let's proceed to step 8:
If we divide 951 by 754, we get 1 and a remainder of 197.
Write down 1 as next digit of the result. 
Result so far: 28381.0
Subtracting 754 from 951 leaves us with 197.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

Advancing to step 9:
If we divide 1970 by 754, we get 2 and a remainder of 462.
Put 2 as the next digit of the answer. 
Result so far: 28381.2
The remainder is 462 after subtracting 1508 from 1970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

Moving on to step 10:
754 can be fit into 4620 6 times, resulting in a remainder of 96.
Write down 6 as next digit of the result. 
Result so far: 28381.26
Subtracting 4524 from 4620 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 11:
754 goes into 960 1 times with a remainder of 206.
The next digit of our result is 1. 
Result so far: 28381.261
If we subtract 754 from 960, we get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Let's proceed to step 12:
When dividing 2060 by 754, we get 2 with a remainder of 552.
The number 2 becomes the next digit in our result. 
Result so far: 28381.2612
The remainder is 552 after subtracting 1508 from 2060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Going ahead to step 13:
The number 754 fits into 5520 7 times, leaving a remainder of 242.
Write down 7 as next digit of the result. 
Result so far: 28381.26127
Subtracting 5278 from 5520 leaves us with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

On to step 14:
754 can be fit into 2420 3 times, resulting in a remainder of 158.
Record the quotient 3 as the next digit in the result. 
Result so far: 28381.261273
If we take 2262 away from 2420, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Advancing to step 15:
If we divide 1580 by 754, we get 2 and a remainder of 72.
Put 2 as the next digit of the answer. 
Result so far: 28381.2612732
Subtracting 1508 from 1580 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 16:
754 goes into 720 0 times with a remainder of 720.
Record the quotient 0 as the next digit in the result. 
Result so far: 28381.2612732
Subtracting 0 from 720 leaves us with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

The final outcome is 28381.2612732, with a leftover of 7.2e-07.