We look at the division of 12837519 by 800 
Let's see how many times 800 fits into 12837519.

On to step 1:
800 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 800

Let's proceed to step 2:
The number 800 fits into 12 0 times, leaving a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 800

On to step 3:
The number 800 fits into 128 0 times, leaving a remainder of 128.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 128, we get 128.
Grab the next digit (3) from the dividend, add it to 128, then carry on: 1283 / 800

Moving on to step 4:
800 goes into 1283 1 times with a remainder of 483.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 800 from 1283 leaves us with 483.
Take the next digit (7) from the dividend and append it to 483, then repeat: 4837 / 800

Moving on to step 5:
800 can be fit into 4837 6 times, resulting in a remainder of 37.
Use 6 as the next digit of our solution. 
Result so far: 16.0
The remainder is 37 after subtracting 4800 from 4837.
Append the next digit (5) from the dividend to 37 and continue with: 375 / 800

Let's proceed to step 6:
800 goes into 375 0 times with a remainder of 375.
Put 0 as the next digit of the answer. 
Result so far: 160.0
Deduct 0 from 375 and we're left with 375.
Grab the next digit (1) from the dividend, add it to 375, then carry on: 3751 / 800

Let's proceed to step 7:
3751 divided by 800 is 4 with a remainder of 551.
Write down 4 as next digit of the result. 
Result so far: 1604.0
Subtract 3200 from 3751 to get 551.
Grab the next digit (9) from the dividend, add it to 551, then carry on: 5519 / 800

Step 8:
If we divide 5519 by 800, we get 6 and a remainder of 719.
Record the quotient 6 as the next digit in the result. 
Result so far: 16046.0
The remainder is 719 after subtracting 4800 from 5519.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7190, and continue the process.

Let's proceed to step 9:
7190 divided by 800 is 8 with a remainder of 790.
The next digit of our result is 8. 
Result so far: 16046.8
If we take 6400 away from 7190, we end up with 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7900, and continue the process.

Going ahead to step 10:
The number 800 fits into 7900 9 times, leaving a remainder of 700.
Write down 9 as next digit of the result. 
Result so far: 16046.89
Subtracting 7200 from 7900 leaves us with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Moving on to step 11:
If we divide 7000 by 800, we get 8 and a remainder of 600.
Write down 8 as next digit of the result. 
Result so far: 16046.898
If we subtract 6400 from 7000, we 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:
800 can be fit into 6000 7 times, resulting in a remainder of 400.
Record the quotient 7 as the next digit in the result. 
Result so far: 16046.8987
Subtract 5600 from 6000 to get 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.
Write down 5 as next digit of the result. 
Result so far: 16046.89875
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.

Advancing to step 14:
When dividing 0 by 800, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 16046.89875
Deduct 0 from 0 and we're left 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.

Going ahead to step 15:
800 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 16046.89875
Subtracting 0 from 0 leaves us 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.

The final result is 16046.89875 with a remainder of 0.0.