Let's divide 21379324 by 715
Our goal is to divide 21379324 by 715.

Going ahead to step 1:
When dividing 2 by 715, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 715

On to step 2:
715 goes into 21 0 times with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 715

Going ahead to step 3:
213 divided by 715 is 0 with a remainder of 213.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 213 leaves us with 213.
Grab the next digit (7) from the dividend, add it to 213, then carry on: 2137 / 715

Moving on to step 4:
When dividing 2137 by 715, we get 2 with a remainder of 707.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 1430 from 2137 to get 707.
Grab the next digit (9) from the dividend, add it to 707, then carry on: 7079 / 715

Moving on to step 5:
7079 divided by 715 is 9 with a remainder of 644.
Record the quotient 9 as the next digit in the result. 
Result so far: 29.0
If we subtract 6435 from 7079, we get 644.
Include the next digit (3) from the dividend after 644, then repeat: 6443 / 715

On to step 6:
If we divide 6443 by 715, we get 9 and a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 299.0
The remainder is 8 after subtracting 6435 from 6443.
Bring next digit (2) of the dividend behind the 8 and repeat the process: 82 / 715

Going ahead to step 7:
If we divide 82 by 715, we get 0 and a remainder of 82.
The number 0 becomes the next digit in our result. 
Result so far: 2990.0
If we take 0 away from 82, we end up with 82.
Append the next digit (4) from the dividend to 82 and continue with: 824 / 715

On to step 8:
824 divided by 715 is 1 with a remainder of 109.
The number 1 becomes the next digit in our result. 
Result so far: 29901.0
Subtracting 715 from 824 leaves us with 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

On to step 9:
715 can be fit into 1090 1 times, resulting in a remainder of 375.
Record the quotient 1 as the next digit in the result. 
Result so far: 29901.1
Deduct 715 from 1090 and we're left with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Moving on to step 10:
3750 divided by 715 is 5 with a remainder of 175.
Record the quotient 5 as the next digit in the result. 
Result so far: 29901.15
Subtract 3575 from 3750 to get 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Going ahead to step 11:
When dividing 1750 by 715, we get 2 with a remainder of 320.
The next digit of our result is 2. 
Result so far: 29901.152
Subtracting 1430 from 1750 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 12:
If we divide 3200 by 715, we get 4 and a remainder of 340.
Use 4 as the next digit of our solution. 
Result so far: 29901.1524
Subtract 2860 from 3200 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Step 13:
If we divide 3400 by 715, we get 4 and a remainder of 540.
The next digit of our result is 4. 
Result so far: 29901.15244
If we take 2860 away from 3400, we end up with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

After the division, we end up with 29901.15244 and a remainder of 0.00054.