Let's divide 21453223 by 765
We want to figure out the number of times 21453223 can be divided by 765.

On to step 1:
If we divide 2 by 765, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 765

Let's proceed to step 2:
The number 765 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
If we subtract 0 from 21, we get 21.
Fetch the next digit (4) from the dividend, attach it to 21 and continue: 214 / 765

On to step 3:
The number 765 fits into 214 0 times, leaving a remainder of 214.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 214 after subtracting 0 from 214.
Append the next digit (5) from the dividend to 214 and continue with: 2145 / 765

Advancing to step 4:
765 can be fit into 2145 2 times, resulting in a remainder of 615.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 615 after subtracting 1530 from 2145.
Grab the next digit (3) from the dividend, add it to 615, then carry on: 6153 / 765

Advancing to step 5:
When dividing 6153 by 765, we get 8 with a remainder of 33.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
Subtract 6120 from 6153 to get 33.
Append the next digit (2) from the dividend to 33 and continue with: 332 / 765

Moving on to step 6:
765 can be fit into 332 0 times, resulting in a remainder of 332.
Use 0 as the next digit of our solution. 
Result so far: 280.0
The remainder is 332 after subtracting 0 from 332.
Fetch the next digit (2) from the dividend, attach it to 332 and continue: 3322 / 765

Let's proceed to step 7:
765 goes into 3322 4 times with a remainder of 262.
Record the quotient 4 as the next digit in the result. 
Result so far: 2804.0
Subtracting 3060 from 3322 leaves us with 262.
Bring next digit (3) of the dividend behind the 262 and repeat the process: 2623 / 765

Step 8:
765 can be fit into 2623 3 times, resulting in a remainder of 328.
The next digit of our result is 3. 
Result so far: 28043.0
The remainder is 328 after subtracting 2295 from 2623.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

On to step 9:
When dividing 3280 by 765, we get 4 with a remainder of 220.
The number 4 becomes the next digit in our result. 
Result so far: 28043.4
If we take 3060 away from 3280, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 10:
765 goes into 2200 2 times with a remainder of 670.
The number 2 becomes the next digit in our result. 
Result so far: 28043.42
The remainder is 670 after subtracting 1530 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6700, and continue the process.

Step 11:
If we divide 6700 by 765, we get 8 and a remainder of 580.
The number 8 becomes the next digit in our result. 
Result so far: 28043.428
If we subtract 6120 from 6700, we get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Going ahead to step 12:
When dividing 5800 by 765, we get 7 with a remainder of 445.
The next digit of our result is 7. 
Result so far: 28043.4287
Subtracting 5355 from 5800 leaves us with 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Going ahead to step 13:
When dividing 4450 by 765, we get 5 with a remainder of 625.
Record the quotient 5 as the next digit in the result. 
Result so far: 28043.42875
Subtract 3825 from 4450 to get 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

On to step 14:
6250 divided by 765 is 8 with a remainder of 130.
Record the quotient 8 as the next digit in the result. 
Result so far: 28043.428758
Subtracting 6120 from 6250 leaves us with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 15:
1300 divided by 765 is 1 with a remainder of 535.
The number 1 becomes the next digit in our result. 
Result so far: 28043.4287581
The remainder is 535 after subtracting 765 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

Going ahead to step 16:
765 goes into 5350 6 times with a remainder of 760.
Put 6 as the next digit of the answer. 
Result so far: 28043.42875816
Deduct 4590 from 5350 and we're left with 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Our division results in 28043.42875816 with a remaining 7.6e-07.