20748635 divided by 405 
Our goal is to divide 20748635 by 405.

Step 1:
2 divided by 405 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 405

Going ahead to step 2:
20 divided by 405 is 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 20 and we're left with 20.
Append the next digit (7) from the dividend to 20 and continue with: 207 / 405

Step 3:
If we divide 207 by 405, we get 0 and a remainder of 207.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 207 and we're left with 207.
Take the next digit (4) from the dividend and append it to 207, then repeat: 2074 / 405

Advancing to step 4:
405 can be fit into 2074 5 times, resulting in a remainder of 49.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 2025 away from 2074, we end up with 49.
Bring next digit (8) of the dividend behind the 49 and repeat the process: 498 / 405

Moving on to step 5:
498 divided by 405 is 1 with a remainder of 93.
Write down 1 as next digit of the result. 
Result so far: 51.0
The remainder is 93 after subtracting 405 from 498.
Grab the next digit (6) from the dividend, add it to 93, then carry on: 936 / 405

On to step 6:
The number 405 fits into 936 2 times, leaving a remainder of 126.
Write down 2 as next digit of the result. 
Result so far: 512.0
If we take 810 away from 936, we end up with 126.
Take the next digit (3) from the dividend and append it to 126, then repeat: 1263 / 405

On to step 7:
405 can be fit into 1263 3 times, resulting in a remainder of 48.
The number 3 becomes the next digit in our result. 
Result so far: 5123.0
Subtract 1215 from 1263 to get 48.
Bring next digit (5) of the dividend behind the 48 and repeat the process: 485 / 405

Step 8:
405 can be fit into 485 1 times, resulting in a remainder of 80.
Put 1 as the next digit of the answer. 
Result so far: 51231.0
Subtract 405 from 485 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 9:
405 can be fit into 800 1 times, resulting in a remainder of 395.
Write down 1 as next digit of the result. 
Result so far: 51231.1
Subtract 405 from 800 to 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.

Step 10:
If we divide 3950 by 405, we get 9 and a remainder of 305.
Record the quotient 9 as the next digit in the result. 
Result so far: 51231.19
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.

Step 11:
The number 405 fits into 3050 7 times, leaving a remainder of 215.
Put 7 as the next digit of the answer. 
Result so far: 51231.197
The remainder is 215 after subtracting 2835 from 3050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

On to step 12:
The number 405 fits into 2150 5 times, leaving a remainder of 125.
Record the quotient 5 as the next digit in the result. 
Result so far: 51231.1975
If we take 2025 away from 2150, we end up with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 13:
When dividing 1250 by 405, we get 3 with a remainder of 35.
The number 3 becomes the next digit in our result. 
Result so far: 51231.19753
The remainder is 35 after subtracting 1215 from 1250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 14:
405 goes into 350 0 times with a remainder of 350.
Record the quotient 0 as the next digit in the result. 
Result so far: 51231.19753
Subtracting 0 from 350 leaves us with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Step 15:
The number 405 fits into 3500 8 times, leaving a remainder of 260.
Record the quotient 8 as the next digit in the result. 
Result so far: 51231.1975308
If we subtract 3240 from 3500, 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.

Let's proceed to step 16:
When dividing 2600 by 405, we get 6 with a remainder of 170.
Write down 6 as next digit of the result. 
Result so far: 51231.19753086
The remainder is 170 after subtracting 2430 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

The quotient of the division is 51231.19753086, and the remainder is 1.7e-07.