We look at the division of 55810079 by 646 
Let's see how many times 646 fits into 55810079.

Going ahead to step 1:
5 divided by 646 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 646

Going ahead to step 2:
646 goes into 55 0 times with a remainder of 55.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 55, we get 55.
Include the next digit (8) from the dividend after 55, then repeat: 558 / 646

Moving on to step 3:
When dividing 558 by 646, we get 0 with a remainder of 558.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 558 after subtracting 0 from 558.
Take the next digit (1) from the dividend and append it to 558, then repeat: 5581 / 646

Advancing to step 4:
When dividing 5581 by 646, we get 8 with a remainder of 413.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 413 after subtracting 5168 from 5581.
Take the next digit (0) from the dividend and append it to 413, then repeat: 4130 / 646

Moving on to step 5:
If we divide 4130 by 646, we get 6 and a remainder of 254.
The number 6 becomes the next digit in our result. 
Result so far: 86.0
If we subtract 3876 from 4130, we get 254.
Fetch the next digit (0) from the dividend, attach it to 254 and continue: 2540 / 646

Moving on to step 6:
The number 646 fits into 2540 3 times, leaving a remainder of 602.
Put 3 as the next digit of the answer. 
Result so far: 863.0
The remainder is 602 after subtracting 1938 from 2540.
Take the next digit (7) from the dividend and append it to 602, then repeat: 6027 / 646

On to step 7:
If we divide 6027 by 646, we get 9 and a remainder of 213.
The next digit of our result is 9. 
Result so far: 8639.0
Subtract 5814 from 6027 to get 213.
Fetch the next digit (9) from the dividend, attach it to 213 and continue: 2139 / 646

On to step 8:
646 can be fit into 2139 3 times, resulting in a remainder of 201.
Put 3 as the next digit of the answer. 
Result so far: 86393.0
Subtract 1938 from 2139 to get 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Moving on to step 9:
646 can be fit into 2010 3 times, resulting in a remainder of 72.
Write down 3 as next digit of the result. 
Result so far: 86393.3
If we subtract 1938 from 2010, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 10:
If we divide 720 by 646, we get 1 and a remainder of 74.
Write down 1 as next digit of the result. 
Result so far: 86393.31
If we subtract 646 from 720, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 11:
If we divide 740 by 646, we get 1 and a remainder of 94.
The next digit of our result is 1. 
Result so far: 86393.311
Deduct 646 from 740 and we're left with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

The final result is 86393.311 with a remainder of 0.0094.