We're dividing 18455819 by 405 
We want to divide 18455819 by 405.

Step 1:
When dividing 1 by 405, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 405

Going ahead to step 2:
When dividing 18 by 405, we get 0 with a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 18 after subtracting 0 from 18.
Append the next digit (4) from the dividend to 18 and continue with: 184 / 405

Advancing to step 3:
If we divide 184 by 405, we get 0 and a remainder of 184.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 184 to get 184.
Append the next digit (5) from the dividend to 184 and continue with: 1845 / 405

Advancing to step 4:
When dividing 1845 by 405, we get 4 with a remainder of 225.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 1620 away from 1845, we end up with 225.
Grab the next digit (5) from the dividend, add it to 225, then carry on: 2255 / 405

On to step 5:
The number 405 fits into 2255 5 times, leaving a remainder of 230.
Put 5 as the next digit of the answer. 
Result so far: 45.0
Subtracting 2025 from 2255 leaves us with 230.
Fetch the next digit (8) from the dividend, attach it to 230 and continue: 2308 / 405

On to step 6:
The number 405 fits into 2308 5 times, leaving a remainder of 283.
The number 5 becomes the next digit in our result. 
Result so far: 455.0
If we subtract 2025 from 2308, we get 283.
Grab the next digit (1) from the dividend, add it to 283, then carry on: 2831 / 405

Let's proceed to step 7:
2831 divided by 405 is 6 with a remainder of 401.
Record the quotient 6 as the next digit in the result. 
Result so far: 4556.0
If we take 2430 away from 2831, we end up with 401.
Include the next digit (9) from the dividend after 401, then repeat: 4019 / 405

Moving on to step 8:
4019 divided by 405 is 9 with a remainder of 374.
Record the quotient 9 as the next digit in the result. 
Result so far: 45569.0
Subtract 3645 from 4019 to get 374.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

Moving on to step 9:
405 can be fit into 3740 9 times, resulting in a remainder of 95.
Write down 9 as next digit of the result. 
Result so far: 45569.9
If we take 3645 away from 3740, we end up with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Let's proceed to step 10:
405 goes into 950 2 times with a remainder of 140.
The next digit of our result is 2. 
Result so far: 45569.92
Deduct 810 from 950 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 11:
When dividing 1400 by 405, we get 3 with a remainder of 185.
Write down 3 as next digit of the result. 
Result so far: 45569.923
The remainder is 185 after subtracting 1215 from 1400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Advancing to step 12:
If we divide 1850 by 405, we get 4 and a remainder of 230.
Put 4 as the next digit of the answer. 
Result so far: 45569.9234
Deduct 1620 from 1850 and we're left with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 13:
405 can be fit into 2300 5 times, resulting in a remainder of 275.
Put 5 as the next digit of the answer. 
Result so far: 45569.92345
If we take 2025 away from 2300, we end up with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Moving on to step 14:
The number 405 fits into 2750 6 times, leaving a remainder of 320.
Record the quotient 6 as the next digit in the result. 
Result so far: 45569.923456
If we subtract 2430 from 2750, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 15:
If we divide 3200 by 405, we get 7 and a remainder of 365.
The number 7 becomes the next digit in our result. 
Result so far: 45569.9234567
The remainder is 365 after subtracting 2835 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Step 16:
405 can be fit into 3650 9 times, resulting in a remainder of 5.
The next digit of our result is 9. 
Result so far: 45569.92345679
Subtracting 3645 from 3650 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

In conclusion, the division gives 45569.92345679 with a balance of 5e-09.