51089076 ÷ 990 
Our goal is to divide 51089076 by 990.

Step 1:
5 divided by 990 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 990

Let's proceed to step 2:
990 goes into 51 0 times with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Append the next digit (0) from the dividend to 51 and continue with: 510 / 990

On to step 3:
510 divided by 990 is 0 with a remainder of 510.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 510 to get 510.
Take the next digit (8) from the dividend and append it to 510, then repeat: 5108 / 990

Step 4:
990 goes into 5108 5 times with a remainder of 158.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 4950 from 5108 leaves us with 158.
Fetch the next digit (9) from the dividend, attach it to 158 and continue: 1589 / 990

Let's proceed to step 5:
The number 990 fits into 1589 1 times, leaving a remainder of 599.
Use 1 as the next digit of our solution. 
Result so far: 51.0
Subtracting 990 from 1589 leaves us with 599.
Bring next digit (0) of the dividend behind the 599 and repeat the process: 5990 / 990

Step 6:
990 can be fit into 5990 6 times, resulting in a remainder of 50.
The next digit of our result is 6. 
Result so far: 516.0
Deduct 5940 from 5990 and we're left with 50.
Bring next digit (7) of the dividend behind the 50 and repeat the process: 507 / 990

Step 7:
If we divide 507 by 990, we get 0 and a remainder of 507.
The next digit of our result is 0. 
Result so far: 5160.0
If we subtract 0 from 507, we get 507.
Include the next digit (6) from the dividend after 507, then repeat: 5076 / 990

Let's proceed to step 8:
990 goes into 5076 5 times with a remainder of 126.
Record the quotient 5 as the next digit in the result. 
Result so far: 51605.0
If we subtract 4950 from 5076, we get 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Going ahead to step 9:
1260 divided by 990 is 1 with a remainder of 270.
Record the quotient 1 as the next digit in the result. 
Result so far: 51605.1
If we subtract 990 from 1260, we get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 10:
990 can be fit into 2700 2 times, resulting in a remainder of 720.
Record the quotient 2 as the next digit in the result. 
Result so far: 51605.12
Subtract 1980 from 2700 to get 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Going ahead to step 11:
7200 divided by 990 is 7 with a remainder of 270.
The next digit of our result is 7. 
Result so far: 51605.127
Subtracting 6930 from 7200 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 12:
When dividing 2700 by 990, we get 2 with a remainder of 720.
Write down 2 as next digit of the result. 
Result so far: 51605.1272
If we subtract 1980 from 2700, we get 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Step 13:
When dividing 7200 by 990, we get 7 with a remainder of 270.
The next digit of our result is 7. 
Result so far: 51605.12727
If we subtract 6930 from 7200, we get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Going ahead to step 14:
The number 990 fits into 2700 2 times, leaving a remainder of 720.
Put 2 as the next digit of the answer. 
Result so far: 51605.127272
Subtract 1980 from 2700 to get 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Let's proceed to step 15:
If we divide 7200 by 990, we get 7 and a remainder of 270.
The number 7 becomes the next digit in our result. 
Result so far: 51605.1272727
If we subtract 6930 from 7200, we get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Let's proceed to step 16:
2700 divided by 990 is 2 with a remainder of 720.
Use 2 as the next digit of our solution. 
Result so far: 51605.12727272
If we take 1980 away from 2700, we end up with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

The final outcome is 51605.12727272, with a leftover of 7.2e-07.