We're dividing 53887403 by 811 
Let's see how many times 811 fits into 53887403.

Step 1:
The number 811 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 811

Moving on to step 2:
811 can be fit into 53 0 times, resulting in a remainder of 53.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 53 and we're left with 53.
Grab the next digit (8) from the dividend, add it to 53, then carry on: 538 / 811

Let's proceed to step 3:
If we divide 538 by 811, we get 0 and a remainder of 538.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 538 leaves us with 538.
Take the next digit (8) from the dividend and append it to 538, then repeat: 5388 / 811

Step 4:
5388 divided by 811 is 6 with a remainder of 522.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 4866 from 5388 leaves us with 522.
Grab the next digit (7) from the dividend, add it to 522, then carry on: 5227 / 811

Moving on to step 5:
811 goes into 5227 6 times with a remainder of 361.
The next digit of our result is 6. 
Result so far: 66.0
Subtract 4866 from 5227 to get 361.
Include the next digit (4) from the dividend after 361, then repeat: 3614 / 811

Going ahead to step 6:
If we divide 3614 by 811, we get 4 and a remainder of 370.
Put 4 as the next digit of the answer. 
Result so far: 664.0
Deduct 3244 from 3614 and we're left with 370.
Include the next digit (0) from the dividend after 370, then repeat: 3700 / 811

Going ahead to step 7:
811 can be fit into 3700 4 times, resulting in a remainder of 456.
Record the quotient 4 as the next digit in the result. 
Result so far: 6644.0
Subtracting 3244 from 3700 leaves us with 456.
Fetch the next digit (3) from the dividend, attach it to 456 and continue: 4563 / 811

On to step 8:
811 goes into 4563 5 times with a remainder of 508.
Record the quotient 5 as the next digit in the result. 
Result so far: 66445.0
Deduct 4055 from 4563 and we're left with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

On to step 9:
If we divide 5080 by 811, we get 6 and a remainder of 214.
Put 6 as the next digit of the answer. 
Result so far: 66445.6
Subtract 4866 from 5080 to get 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Advancing to step 10:
The number 811 fits into 2140 2 times, leaving a remainder of 518.
Put 2 as the next digit of the answer. 
Result so far: 66445.62
Deduct 1622 from 2140 and we're left with 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Step 11:
811 can be fit into 5180 6 times, resulting in a remainder of 314.
Write down 6 as next digit of the result. 
Result so far: 66445.626
Deduct 4866 from 5180 and we're left with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Step 12:
If we divide 3140 by 811, we get 3 and a remainder of 707.
Record the quotient 3 as the next digit in the result. 
Result so far: 66445.6263
Subtract 2433 from 3140 to get 707.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7070, and continue the process.

On to step 13:
When dividing 7070 by 811, we get 8 with a remainder of 582.
The next digit of our result is 8. 
Result so far: 66445.62638
Subtracting 6488 from 7070 leaves us with 582.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5820, and continue the process.

On to step 14:
The number 811 fits into 5820 7 times, leaving a remainder of 143.
The number 7 becomes the next digit in our result. 
Result so far: 66445.626387
If we take 5677 away from 5820, we end up with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Moving on to step 15:
811 goes into 1430 1 times with a remainder of 619.
The next digit of our result is 1. 
Result so far: 66445.6263871
Subtracting 811 from 1430 leaves us with 619.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6190, and continue the process.

On to step 16:
When dividing 6190 by 811, we get 7 with a remainder of 513.
The number 7 becomes the next digit in our result. 
Result so far: 66445.62638717
Deduct 5677 from 6190 and we're left with 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

Our division results in 66445.62638717 with a remaining 5.13e-07.