We look at the division of 19879451 by 405 
We want to figure out the number of times 19879451 can be divided by 405.

Advancing to step 1:
If we divide 1 by 405, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 405

Let's proceed to step 2:
19 divided by 405 is 0 with a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 19 to get 19.
Fetch the next digit (8) from the dividend, attach it to 19 and continue: 198 / 405

Advancing to step 3:
When dividing 198 by 405, we get 0 with a remainder of 198.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 198, we get 198.
Grab the next digit (7) from the dividend, add it to 198, then carry on: 1987 / 405

Step 4:
405 can be fit into 1987 4 times, resulting in a remainder of 367.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 1620 from 1987 and we're left with 367.
Append the next digit (9) from the dividend to 367 and continue with: 3679 / 405

Let's proceed to step 5:
405 can be fit into 3679 9 times, resulting in a remainder of 34.
The next digit of our result is 9. 
Result so far: 49.0
If we take 3645 away from 3679, we end up with 34.
Fetch the next digit (4) from the dividend, attach it to 34 and continue: 344 / 405

Moving on to step 6:
344 divided by 405 is 0 with a remainder of 344.
The number 0 becomes the next digit in our result. 
Result so far: 490.0
If we subtract 0 from 344, we get 344.
Append the next digit (5) from the dividend to 344 and continue with: 3445 / 405

Going ahead to step 7:
405 can be fit into 3445 8 times, resulting in a remainder of 205.
Use 8 as the next digit of our solution. 
Result so far: 4908.0
If we subtract 3240 from 3445, we get 205.
Fetch the next digit (1) from the dividend, attach it to 205 and continue: 2051 / 405

Advancing to step 8:
The number 405 fits into 2051 5 times, leaving a remainder of 26.
The number 5 becomes the next digit in our result. 
Result so far: 49085.0
If we take 2025 away from 2051, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 9:
If we divide 260 by 405, we get 0 and a remainder of 260.
The next digit of our result is 0. 
Result so far: 49085.0
If we subtract 0 from 260, we 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 10:
405 can be fit into 2600 6 times, resulting in a remainder of 170.
Put 6 as the next digit of the answer. 
Result so far: 49085.06
Deduct 2430 from 2600 and we're left with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 11:
405 can be fit into 1700 4 times, resulting in a remainder of 80.
Write down 4 as next digit of the result. 
Result so far: 49085.064
The remainder is 80 after subtracting 1620 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 12:
405 goes into 800 1 times with a remainder of 395.
The number 1 becomes the next digit in our result. 
Result so far: 49085.0641
If we subtract 405 from 800, we get 395.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3950, and continue the process.

Going ahead to step 13:
405 goes into 3950 9 times with a remainder of 305.
The number 9 becomes the next digit in our result. 
Result so far: 49085.06419
Subtract 3645 from 3950 to get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

On to step 14:
If we divide 3050 by 405, we get 7 and a remainder of 215.
Record the quotient 7 as the next digit in the result. 
Result so far: 49085.064197
Subtracting 2835 from 3050 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Advancing to step 15:
405 goes into 2150 5 times with a remainder of 125.
The next digit of our result is 5. 
Result so far: 49085.0641975
Subtract 2025 from 2150 to get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Step 16:
If we divide 1250 by 405, we get 3 and a remainder of 35.
Use 3 as the next digit of our solution. 
Result so far: 49085.06419753
If we take 1215 away from 1250, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

In conclusion, the division gives 49085.06419753 with a balance of 3.5e-08.