We're dividing 21571343 by 684 
We're looking to find how many times 684 goes into 21571343.

Advancing to step 1:
The number 684 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 684

Step 2:
When dividing 21 by 684, we get 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Include the next digit (5) from the dividend after 21, then repeat: 215 / 684

On to step 3:
684 can be fit into 215 0 times, resulting in a remainder of 215.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 215 after subtracting 0 from 215.
Bring next digit (7) of the dividend behind the 215 and repeat the process: 2157 / 684

On to step 4:
When dividing 2157 by 684, we get 3 with a remainder of 105.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 2052 from 2157 and we're left with 105.
Include the next digit (1) from the dividend after 105, then repeat: 1051 / 684

Advancing to step 5:
1051 divided by 684 is 1 with a remainder of 367.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
The remainder is 367 after subtracting 684 from 1051.
Take the next digit (3) from the dividend and append it to 367, then repeat: 3673 / 684

Moving on to step 6:
If we divide 3673 by 684, we get 5 and a remainder of 253.
Use 5 as the next digit of our solution. 
Result so far: 315.0
Subtracting 3420 from 3673 leaves us with 253.
Include the next digit (4) from the dividend after 253, then repeat: 2534 / 684

On to step 7:
If we divide 2534 by 684, we get 3 and a remainder of 482.
The next digit of our result is 3. 
Result so far: 3153.0
If we subtract 2052 from 2534, we get 482.
Fetch the next digit (3) from the dividend, attach it to 482 and continue: 4823 / 684

Going ahead to step 8:
The number 684 fits into 4823 7 times, leaving a remainder of 35.
Write down 7 as next digit of the result. 
Result so far: 31537.0
The remainder is 35 after subtracting 4788 from 4823.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 9:
684 can be fit into 350 0 times, resulting in a remainder of 350.
The number 0 becomes the next digit in our result. 
Result so far: 31537.0
The remainder is 350 after subtracting 0 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Moving on to step 10:
684 goes into 3500 5 times with a remainder of 80.
Write down 5 as next digit of the result. 
Result so far: 31537.05
Deduct 3420 from 3500 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 11:
The number 684 fits into 800 1 times, leaving a remainder of 116.
The number 1 becomes the next digit in our result. 
Result so far: 31537.051
The remainder is 116 after subtracting 684 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Moving on to step 12:
When dividing 1160 by 684, we get 1 with a remainder of 476.
Put 1 as the next digit of the answer. 
Result so far: 31537.0511
If we take 684 away from 1160, we end up with 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

The final result is 31537.0511 with a remainder of 0.00476.