51385912 ÷ 499 
We want to figure out the number of times 51385912 can be divided by 499.

Let's proceed to step 1:
499 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 499

Let's proceed to step 2:
The number 499 fits into 51 0 times, leaving a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Append the next digit (3) from the dividend to 51 and continue with: 513 / 499

Advancing to step 3:
The number 499 fits into 513 1 times, leaving a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 499 away from 513, we end up with 14.
Take the next digit (8) from the dividend and append it to 14, then repeat: 148 / 499

Advancing to step 4:
When dividing 148 by 499, we get 0 with a remainder of 148.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtract 0 from 148 to get 148.
Fetch the next digit (5) from the dividend, attach it to 148 and continue: 1485 / 499

Step 5:
When dividing 1485 by 499, we get 2 with a remainder of 487.
The next digit of our result is 2. 
Result so far: 102.0
Subtract 998 from 1485 to get 487.
Fetch the next digit (9) from the dividend, attach it to 487 and continue: 4879 / 499

Going ahead to step 6:
If we divide 4879 by 499, we get 9 and a remainder of 388.
The number 9 becomes the next digit in our result. 
Result so far: 1029.0
Subtract 4491 from 4879 to get 388.
Bring next digit (1) of the dividend behind the 388 and repeat the process: 3881 / 499

Moving on to step 7:
The number 499 fits into 3881 7 times, leaving a remainder of 388.
The next digit of our result is 7. 
Result so far: 10297.0
Subtracting 3493 from 3881 leaves us with 388.
Append the next digit (2) from the dividend to 388 and continue with: 3882 / 499

Moving on to step 8:
3882 divided by 499 is 7 with a remainder of 389.
Write down 7 as next digit of the result. 
Result so far: 102977.0
If we subtract 3493 from 3882, we get 389.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

Step 9:
The number 499 fits into 3890 7 times, leaving a remainder of 397.
Write down 7 as next digit of the result. 
Result so far: 102977.7
Subtract 3493 from 3890 to get 397.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3970, and continue the process.

On to step 10:
When dividing 3970 by 499, we get 7 with a remainder of 477.
The number 7 becomes the next digit in our result. 
Result so far: 102977.77
The remainder is 477 after subtracting 3493 from 3970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

The final result is 102977.77 with a remainder of 0.477.