We're dividing 15816604 by 804 
We want to divide 15816604 by 804.

Moving on to step 1:
If we divide 1 by 804, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 804

Going ahead to step 2:
The number 804 fits into 15 0 times, leaving a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Include the next digit (8) from the dividend after 15, then repeat: 158 / 804

Moving on to step 3:
804 can be fit into 158 0 times, resulting in a remainder of 158.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 158, we get 158.
Grab the next digit (1) from the dividend, add it to 158, then carry on: 1581 / 804

Advancing to step 4:
1581 divided by 804 is 1 with a remainder of 777.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 804 from 1581 to get 777.
Take the next digit (6) from the dividend and append it to 777, then repeat: 7776 / 804

Advancing to step 5:
7776 divided by 804 is 9 with a remainder of 540.
Put 9 as the next digit of the answer. 
Result so far: 19.0
The remainder is 540 after subtracting 7236 from 7776.
Fetch the next digit (6) from the dividend, attach it to 540 and continue: 5406 / 804

Step 6:
804 can be fit into 5406 6 times, resulting in a remainder of 582.
Put 6 as the next digit of the answer. 
Result so far: 196.0
If we take 4824 away from 5406, we end up with 582.
Fetch the next digit (0) from the dividend, attach it to 582 and continue: 5820 / 804

On to step 7:
5820 divided by 804 is 7 with a remainder of 192.
The next digit of our result is 7. 
Result so far: 1967.0
If we subtract 5628 from 5820, we get 192.
Grab the next digit (4) from the dividend, add it to 192, then carry on: 1924 / 804

On to step 8:
804 goes into 1924 2 times with a remainder of 316.
Record the quotient 2 as the next digit in the result. 
Result so far: 19672.0
Subtracting 1608 from 1924 leaves us with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Going ahead to step 9:
804 goes into 3160 3 times with a remainder of 748.
Write down 3 as next digit of the result. 
Result so far: 19672.3
The remainder is 748 after subtracting 2412 from 3160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

Advancing to step 10:
804 goes into 7480 9 times with a remainder of 244.
Write down 9 as next digit of the result. 
Result so far: 19672.39
Deduct 7236 from 7480 and we're left with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Moving on to step 11:
If we divide 2440 by 804, we get 3 and a remainder of 28.
The number 3 becomes the next digit in our result. 
Result so far: 19672.393
Deduct 2412 from 2440 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 12:
The number 804 fits into 280 0 times, leaving a remainder of 280.
Use 0 as the next digit of our solution. 
Result so far: 19672.393
If we take 0 away from 280, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 13:
2800 divided by 804 is 3 with a remainder of 388.
Write down 3 as next digit of the result. 
Result so far: 19672.39303
If we take 2412 away from 2800, we end up with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Step 14:
If we divide 3880 by 804, we get 4 and a remainder of 664.
Put 4 as the next digit of the answer. 
Result so far: 19672.393034
Subtract 3216 from 3880 to get 664.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6640, and continue the process.

Step 15:
804 can be fit into 6640 8 times, resulting in a remainder of 208.
Put 8 as the next digit of the answer. 
Result so far: 19672.3930348
The remainder is 208 after subtracting 6432 from 6640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Moving on to step 16:
The number 804 fits into 2080 2 times, leaving a remainder of 472.
The number 2 becomes the next digit in our result. 
Result so far: 19672.39303482
Deduct 1608 from 2080 and we're left with 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

After the division, we end up with 19672.39303482 and a remainder of 4.72e-07.