We're dividing 21313579 by 375 
We want to divide 21313579 by 375.

Advancing to step 1:
375 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 375

On to step 2:
If we divide 21 by 375, we get 0 and a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Bring next digit (3) of the dividend behind the 21 and repeat the process: 213 / 375

On to step 3:
When dividing 213 by 375, we get 0 with a remainder of 213.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 213 and we're left with 213.
Bring next digit (1) of the dividend behind the 213 and repeat the process: 2131 / 375

Let's proceed to step 4:
The number 375 fits into 2131 5 times, leaving a remainder of 256.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 1875 from 2131, we get 256.
Bring next digit (3) of the dividend behind the 256 and repeat the process: 2563 / 375

Advancing to step 5:
2563 divided by 375 is 6 with a remainder of 313.
Put 6 as the next digit of the answer. 
Result so far: 56.0
If we subtract 2250 from 2563, we get 313.
Include the next digit (5) from the dividend after 313, then repeat: 3135 / 375

Step 6:
3135 divided by 375 is 8 with a remainder of 135.
Use 8 as the next digit of our solution. 
Result so far: 568.0
The remainder is 135 after subtracting 3000 from 3135.
Fetch the next digit (7) from the dividend, attach it to 135 and continue: 1357 / 375

Advancing to step 7:
375 can be fit into 1357 3 times, resulting in a remainder of 232.
Put 3 as the next digit of the answer. 
Result so far: 5683.0
If we take 1125 away from 1357, we end up with 232.
Take the next digit (9) from the dividend and append it to 232, then repeat: 2329 / 375

Moving on to step 8:
375 can be fit into 2329 6 times, resulting in a remainder of 79.
The number 6 becomes the next digit in our result. 
Result so far: 56836.0
Deduct 2250 from 2329 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Advancing to step 9:
375 goes into 790 2 times with a remainder of 40.
The next digit of our result is 2. 
Result so far: 56836.2
Subtract 750 from 790 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
The number 375 fits into 400 1 times, leaving a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 56836.21
Subtracting 375 from 400 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 11:
375 can be fit into 250 0 times, resulting in a remainder of 250.
The number 0 becomes the next digit in our result. 
Result so far: 56836.21
Subtracting 0 from 250 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 12:
When dividing 2500 by 375, we get 6 with a remainder of 250.
Write down 6 as next digit of the result. 
Result so far: 56836.2106
Subtracting 2250 from 2500 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 13:
375 can be fit into 2500 6 times, resulting in a remainder of 250.
Write down 6 as next digit of the result. 
Result so far: 56836.21066
The remainder is 250 after subtracting 2250 from 2500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

The final outcome is 56836.21066, with a leftover of 0.00025.