We look at the division of 16684239 by 521 
We're looking to find how many times 521 goes into 16684239.

Going ahead to step 1:
521 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 521

Going ahead to step 2:
The number 521 fits into 16 0 times, leaving a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Include the next digit (6) from the dividend after 16, then repeat: 166 / 521

Let's proceed to step 3:
521 can be fit into 166 0 times, resulting in a remainder of 166.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 166, we get 166.
Append the next digit (8) from the dividend to 166 and continue with: 1668 / 521

On to step 4:
521 can be fit into 1668 3 times, resulting in a remainder of 105.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 1563 from 1668, we get 105.
Grab the next digit (4) from the dividend, add it to 105, then carry on: 1054 / 521

Advancing to step 5:
521 can be fit into 1054 2 times, resulting in a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 32.0
If we take 1042 away from 1054, we end up with 12.
Fetch the next digit (2) from the dividend, attach it to 12 and continue: 122 / 521

On to step 6:
If we divide 122 by 521, we get 0 and a remainder of 122.
Write down 0 as next digit of the result. 
Result so far: 320.0
If we take 0 away from 122, we end up with 122.
Append the next digit (3) from the dividend to 122 and continue with: 1223 / 521

Going ahead to step 7:
521 can be fit into 1223 2 times, resulting in a remainder of 181.
Put 2 as the next digit of the answer. 
Result so far: 3202.0
If we take 1042 away from 1223, we end up with 181.
Bring next digit (9) of the dividend behind the 181 and repeat the process: 1819 / 521

Going ahead to step 8:
521 can be fit into 1819 3 times, resulting in a remainder of 256.
Use 3 as the next digit of our solution. 
Result so far: 32023.0
The remainder is 256 after subtracting 1563 from 1819.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Step 9:
When dividing 2560 by 521, we get 4 with a remainder of 476.
The number 4 becomes the next digit in our result. 
Result so far: 32023.4
If we subtract 2084 from 2560, 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.

Going ahead to step 10:
If we divide 4760 by 521, we get 9 and a remainder of 71.
Put 9 as the next digit of the answer. 
Result so far: 32023.49
The remainder is 71 after subtracting 4689 from 4760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 11:
521 can be fit into 710 1 times, resulting in a remainder of 189.
Put 1 as the next digit of the answer. 
Result so far: 32023.491
Subtract 521 from 710 to get 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Moving on to step 12:
521 can be fit into 1890 3 times, resulting in a remainder of 327.
Put 3 as the next digit of the answer. 
Result so far: 32023.4913
If we take 1563 away from 1890, we end up with 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

Advancing to step 13:
If we divide 3270 by 521, we get 6 and a remainder of 144.
Put 6 as the next digit of the answer. 
Result so far: 32023.49136
Subtracting 3126 from 3270 leaves us with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Step 14:
521 goes into 1440 2 times with a remainder of 398.
Write down 2 as next digit of the result. 
Result so far: 32023.491362
If we take 1042 away from 1440, we end up with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Step 15:
3980 divided by 521 is 7 with a remainder of 333.
Put 7 as the next digit of the answer. 
Result so far: 32023.4913627
The remainder is 333 after subtracting 3647 from 3980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Step 16:
If we divide 3330 by 521, we get 6 and a remainder of 204.
Record the quotient 6 as the next digit in the result. 
Result so far: 32023.49136276
Deduct 3126 from 3330 and we're left with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

In conclusion, the division gives 32023.49136276 with a balance of 2.04e-07.