Let's divide 12356398 by 404
Our goal is to divide 12356398 by 404.

Step 1:
When dividing 1 by 404, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 404

Step 2:
12 divided by 404 is 0 with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 404

Step 3:
404 goes into 123 0 times with a remainder of 123.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 123 and we're left with 123.
Take the next digit (5) from the dividend and append it to 123, then repeat: 1235 / 404

Going ahead to step 4:
The number 404 fits into 1235 3 times, leaving a remainder of 23.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 23 after subtracting 1212 from 1235.
Take the next digit (6) from the dividend and append it to 23, then repeat: 236 / 404

Advancing to step 5:
404 can be fit into 236 0 times, resulting in a remainder of 236.
Write down 0 as next digit of the result. 
Result so far: 30.0
If we subtract 0 from 236, we get 236.
Append the next digit (3) from the dividend to 236 and continue with: 2363 / 404

Advancing to step 6:
The number 404 fits into 2363 5 times, leaving a remainder of 343.
Use 5 as the next digit of our solution. 
Result so far: 305.0
If we subtract 2020 from 2363, we get 343.
Bring next digit (9) of the dividend behind the 343 and repeat the process: 3439 / 404

Going ahead to step 7:
When dividing 3439 by 404, we get 8 with a remainder of 207.
The number 8 becomes the next digit in our result. 
Result so far: 3058.0
If we subtract 3232 from 3439, we get 207.
Take the next digit (8) from the dividend and append it to 207, then repeat: 2078 / 404

Moving on to step 8:
If we divide 2078 by 404, we get 5 and a remainder of 58.
Put 5 as the next digit of the answer. 
Result so far: 30585.0
If we subtract 2020 from 2078, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 9:
404 can be fit into 580 1 times, resulting in a remainder of 176.
Use 1 as the next digit of our solution. 
Result so far: 30585.1
If we take 404 away from 580, we end up with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 10:
1760 divided by 404 is 4 with a remainder of 144.
Use 4 as the next digit of our solution. 
Result so far: 30585.14
Subtracting 1616 from 1760 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.

Let's proceed to step 11:
When dividing 1440 by 404, we get 3 with a remainder of 228.
Use 3 as the next digit of our solution. 
Result so far: 30585.143
If we subtract 1212 from 1440, we get 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Step 12:
2280 divided by 404 is 5 with a remainder of 260.
Record the quotient 5 as the next digit in the result. 
Result so far: 30585.1435
Subtract 2020 from 2280 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

On to step 13:
If we divide 2600 by 404, we get 6 and a remainder of 176.
Use 6 as the next digit of our solution. 
Result so far: 30585.14356
If we subtract 2424 from 2600, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Let's proceed to step 14:
1760 divided by 404 is 4 with a remainder of 144.
Record the quotient 4 as the next digit in the result. 
Result so far: 30585.143564
Deduct 1616 from 1760 and we're left 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.

On to step 15:
When dividing 1440 by 404, we get 3 with a remainder of 228.
Put 3 as the next digit of the answer. 
Result so far: 30585.1435643
Deduct 1212 from 1440 and we're left with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Going ahead to step 16:
404 can be fit into 2280 5 times, resulting in a remainder of 260.
The number 5 becomes the next digit in our result. 
Result so far: 30585.14356435
Subtract 2020 from 2280 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

The quotient of the division is 30585.14356435, and the remainder is 2.6e-07.