12403494 divided by 798 
We want to figure out the number of times 12403494 can be divided by 798.

On to step 1:
798 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 798

Advancing to step 2:
12 divided by 798 is 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Take the next digit (4) from the dividend and append it to 12, then repeat: 124 / 798

On to step 3:
If we divide 124 by 798, we get 0 and a remainder of 124.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 124, we get 124.
Fetch the next digit (0) from the dividend, attach it to 124 and continue: 1240 / 798

Let's proceed to step 4:
When dividing 1240 by 798, we get 1 with a remainder of 442.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 798 from 1240, we get 442.
Include the next digit (3) from the dividend after 442, then repeat: 4423 / 798

Going ahead to step 5:
The number 798 fits into 4423 5 times, leaving a remainder of 433.
Write down 5 as next digit of the result. 
Result so far: 15.0
Subtracting 3990 from 4423 leaves us with 433.
Grab the next digit (4) from the dividend, add it to 433, then carry on: 4334 / 798

On to step 6:
The number 798 fits into 4334 5 times, leaving a remainder of 344.
Record the quotient 5 as the next digit in the result. 
Result so far: 155.0
Deduct 3990 from 4334 and we're left with 344.
Append the next digit (9) from the dividend to 344 and continue with: 3449 / 798

Step 7:
When dividing 3449 by 798, we get 4 with a remainder of 257.
The number 4 becomes the next digit in our result. 
Result so far: 1554.0
If we take 3192 away from 3449, we end up with 257.
Append the next digit (4) from the dividend to 257 and continue with: 2574 / 798

On to step 8:
798 can be fit into 2574 3 times, resulting in a remainder of 180.
Write down 3 as next digit of the result. 
Result so far: 15543.0
Deduct 2394 from 2574 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Let's proceed to step 9:
When dividing 1800 by 798, we get 2 with a remainder of 204.
Write down 2 as next digit of the result. 
Result so far: 15543.2
Subtract 1596 from 1800 to get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Advancing to step 10:
2040 divided by 798 is 2 with a remainder of 444.
The next digit of our result is 2. 
Result so far: 15543.22
If we take 1596 away from 2040, we end up with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

The quotient of the division is 15543.22, and the remainder is 0.444.