We're dividing 21539933 by 684 
We're looking to find how many times 684 goes into 21539933.

Advancing to step 1:
2 divided by 684 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 684

Moving on to step 2:
684 can be fit into 21 0 times, resulting in 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.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 684

Moving on to step 3:
215 divided by 684 is 0 with a remainder of 215.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 215 to get 215.
Include the next digit (3) from the dividend after 215, then repeat: 2153 / 684

Let's proceed to step 4:
When dividing 2153 by 684, we get 3 with a remainder of 101.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 101 after subtracting 2052 from 2153.
Include the next digit (9) from the dividend after 101, then repeat: 1019 / 684

Advancing to step 5:
The number 684 fits into 1019 1 times, leaving a remainder of 335.
Use 1 as the next digit of our solution. 
Result so far: 31.0
If we take 684 away from 1019, we end up with 335.
Fetch the next digit (9) from the dividend, attach it to 335 and continue: 3359 / 684

Step 6:
When dividing 3359 by 684, we get 4 with a remainder of 623.
Put 4 as the next digit of the answer. 
Result so far: 314.0
If we subtract 2736 from 3359, we get 623.
Grab the next digit (3) from the dividend, add it to 623, then carry on: 6233 / 684

Step 7:
The number 684 fits into 6233 9 times, leaving a remainder of 77.
The next digit of our result is 9. 
Result so far: 3149.0
Subtracting 6156 from 6233 leaves us with 77.
Fetch the next digit (3) from the dividend, attach it to 77 and continue: 773 / 684

Advancing to step 8:
684 goes into 773 1 times with a remainder of 89.
Record the quotient 1 as the next digit in the result. 
Result so far: 31491.0
Deduct 684 from 773 and we're left with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Advancing to step 9:
684 can be fit into 890 1 times, resulting in a remainder of 206.
Put 1 as the next digit of the answer. 
Result so far: 31491.1
The remainder is 206 after subtracting 684 from 890.
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 10:
If we divide 2060 by 684, we get 3 and a remainder of 8.
The number 3 becomes the next digit in our result. 
Result so far: 31491.13
Deduct 2052 from 2060 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 11:
The number 684 fits into 80 0 times, leaving a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 31491.13
Subtract 0 from 80 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 12:
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: 31491.1301
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.

Going ahead to step 13:
684 goes into 1160 1 times with a remainder of 476.
Write down 1 as next digit of the result. 
Result so far: 31491.13011
If we subtract 684 from 1160, we get 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 outcome is 31491.13011, with a leftover of 0.000476.