53057777 ÷ 405 
We want to figure out the number of times 53057777 can be divided by 405.

Step 1:
The number 405 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 405

On to step 2:
405 can be fit into 53 0 times, resulting in a remainder of 53.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 53, we get 53.
Bring next digit (0) of the dividend behind the 53 and repeat the process: 530 / 405

On to step 3:
405 can be fit into 530 1 times, resulting in a remainder of 125.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 405 away from 530, we end up with 125.
Bring next digit (5) of the dividend behind the 125 and repeat the process: 1255 / 405

Moving on to step 4:
If we divide 1255 by 405, we get 3 and a remainder of 40.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we subtract 1215 from 1255, we get 40.
Include the next digit (7) from the dividend after 40, then repeat: 407 / 405

Advancing to step 5:
When dividing 407 by 405, we get 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 131.0
If we subtract 405 from 407, we get 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 405

Going ahead to step 6:
If we divide 27 by 405, we get 0 and a remainder of 27.
Write down 0 as next digit of the result. 
Result so far: 1310.0
Deduct 0 from 27 and we're left with 27.
Grab the next digit (7) from the dividend, add it to 27, then carry on: 277 / 405

On to step 7:
When dividing 277 by 405, we get 0 with a remainder of 277.
The next digit of our result is 0. 
Result so far: 13100.0
Subtracting 0 from 277 leaves us with 277.
Grab the next digit (7) from the dividend, add it to 277, then carry on: 2777 / 405

Step 8:
When dividing 2777 by 405, we get 6 with a remainder of 347.
Record the quotient 6 as the next digit in the result. 
Result so far: 131006.0
Deduct 2430 from 2777 and we're left with 347.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

Step 9:
3470 divided by 405 is 8 with a remainder of 230.
The number 8 becomes the next digit in our result. 
Result so far: 131006.8
Deduct 3240 from 3470 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.

On to step 10:
405 goes into 2300 5 times with a remainder of 275.
Use 5 as the next digit of our solution. 
Result so far: 131006.85
The remainder is 275 after subtracting 2025 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Advancing to step 11:
405 goes into 2750 6 times with a remainder of 320.
Record the quotient 6 as the next digit in the result. 
Result so far: 131006.856
Deduct 2430 from 2750 and we're left with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 12:
When dividing 3200 by 405, we get 7 with a remainder of 365.
Put 7 as the next digit of the answer. 
Result so far: 131006.8567
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 13:
3650 divided by 405 is 9 with a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 131006.85679
The remainder is 5 after subtracting 3645 from 3650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 14:
When dividing 50 by 405, we get 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 131006.85679
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 15:
405 goes into 500 1 times with a remainder of 95.
Use 1 as the next digit of our solution. 
Result so far: 131006.8567901
If we take 405 away from 500, 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.

Step 16:
405 can be fit into 950 2 times, resulting in a remainder of 140.
The next digit of our result is 2. 
Result so far: 131006.85679012
If we take 810 away from 950, we end up 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.

The final result is 131006.85679012 with a remainder of 1.4e-07.