12165499 divided by 800 
Our goal is to divide 12165499 by 800.

Moving on to step 1:
1 divided by 800 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 800

Step 2:
800 goes into 12 0 times with a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 800

Let's proceed to step 3:
121 divided by 800 is 0 with a remainder of 121.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 121 and we're left with 121.
Bring next digit (6) of the dividend behind the 121 and repeat the process: 1216 / 800

On to step 4:
When dividing 1216 by 800, we get 1 with a remainder of 416.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 800 from 1216 leaves us with 416.
Bring next digit (5) of the dividend behind the 416 and repeat the process: 4165 / 800

Going ahead to step 5:
4165 divided by 800 is 5 with a remainder of 165.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 4000 away from 4165, we end up with 165.
Grab the next digit (4) from the dividend, add it to 165, then carry on: 1654 / 800

Advancing to step 6:
The number 800 fits into 1654 2 times, leaving a remainder of 54.
Put 2 as the next digit of the answer. 
Result so far: 152.0
If we take 1600 away from 1654, we end up with 54.
Append the next digit (9) from the dividend to 54 and continue with: 549 / 800

Going ahead to step 7:
If we divide 549 by 800, we get 0 and a remainder of 549.
The number 0 becomes the next digit in our result. 
Result so far: 1520.0
Subtract 0 from 549 to get 549.
Append the next digit (9) from the dividend to 549 and continue with: 5499 / 800

Step 8:
The number 800 fits into 5499 6 times, leaving a remainder of 699.
The number 6 becomes the next digit in our result. 
Result so far: 15206.0
Subtracting 4800 from 5499 leaves us with 699.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6990, and continue the process.

Moving on to step 9:
The number 800 fits into 6990 8 times, leaving a remainder of 590.
The number 8 becomes the next digit in our result. 
Result so far: 15206.8
Deduct 6400 from 6990 and we're left with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Advancing to step 10:
800 goes into 5900 7 times with a remainder of 300.
Write down 7 as next digit of the result. 
Result so far: 15206.87
If we subtract 5600 from 5900, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 11:
If we divide 3000 by 800, we get 3 and a remainder of 600.
The number 3 becomes the next digit in our result. 
Result so far: 15206.873
Subtract 2400 from 3000 to get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Going ahead to step 12:
6000 divided by 800 is 7 with a remainder of 400.
Write down 7 as next digit of the result. 
Result so far: 15206.8737
If we take 5600 away from 6000, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Advancing to step 13:
If we divide 4000 by 800, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 15206.87375
If we take 4000 away from 4000, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 14:
800 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 15206.87375
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 15:
0 divided by 800 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 15206.87375
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 15206.87375 with a remaining 0.0.