We divide 51191777 by 90
Our goal is to divide 51191777 by 90.

Going ahead to step 1:
The number 90 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 90

Step 2:
90 goes into 51 0 times with a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Bring next digit (1) of the dividend behind the 51 and repeat the process: 511 / 90

Let's proceed to step 3:
90 goes into 511 5 times with a remainder of 61.
Write down 5 as next digit of the result. 
Result so far: 5.0
The remainder is 61 after subtracting 450 from 511.
Include the next digit (9) from the dividend after 61, then repeat: 619 / 90

Moving on to step 4:
90 goes into 619 6 times with a remainder of 79.
Use 6 as the next digit of our solution. 
Result so far: 56.0
Subtracting 540 from 619 leaves us with 79.
Fetch the next digit (1) from the dividend, attach it to 79 and continue: 791 / 90

Going ahead to step 5:
The number 90 fits into 791 8 times, leaving a remainder of 71.
Write down 8 as next digit of the result. 
Result so far: 568.0
If we subtract 720 from 791, we get 71.
Fetch the next digit (7) from the dividend, attach it to 71 and continue: 717 / 90

Let's proceed to step 6:
When dividing 717 by 90, we get 7 with a remainder of 87.
Use 7 as the next digit of our solution. 
Result so far: 5687.0
If we subtract 630 from 717, we get 87.
Fetch the next digit (7) from the dividend, attach it to 87 and continue: 877 / 90

Advancing to step 7:
If we divide 877 by 90, we get 9 and a remainder of 67.
Use 9 as the next digit of our solution. 
Result so far: 56879.0
Deduct 810 from 877 and we're left with 67.
Take the next digit (7) from the dividend and append it to 67, then repeat: 677 / 90

Going ahead to step 8:
The number 90 fits into 677 7 times, leaving a remainder of 47.
The next digit of our result is 7. 
Result so far: 568797.0
Deduct 630 from 677 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 9:
90 goes into 470 5 times with a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 568797.5
The remainder is 20 after subtracting 450 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
90 goes into 200 2 times with a remainder of 20.
The next digit of our result is 2. 
Result so far: 568797.52
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
When dividing 200 by 90, we get 2 with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 568797.522
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 568797.522 with a remainder of 0.002.