Let's divide 39510768 by 990
We want to divide 39510768 by 990.

Going ahead to step 1:
990 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 990

Advancing to step 2:
The number 990 fits into 39 0 times, leaving a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Append the next digit (5) from the dividend to 39 and continue with: 395 / 990

Advancing to step 3:
990 can be fit into 395 0 times, resulting in a remainder of 395.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 395 leaves us with 395.
Bring next digit (1) of the dividend behind the 395 and repeat the process: 3951 / 990

Let's proceed to step 4:
990 can be fit into 3951 3 times, resulting in a remainder of 981.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 2970 from 3951 to get 981.
Take the next digit (0) from the dividend and append it to 981, then repeat: 9810 / 990

Moving on to step 5:
990 can be fit into 9810 9 times, resulting in a remainder of 900.
The next digit of our result is 9. 
Result so far: 39.0
Subtract 8910 from 9810 to get 900.
Take the next digit (7) from the dividend and append it to 900, then repeat: 9007 / 990

Moving on to step 6:
When dividing 9007 by 990, we get 9 with a remainder of 97.
The next digit of our result is 9. 
Result so far: 399.0
If we subtract 8910 from 9007, we get 97.
Take the next digit (6) from the dividend and append it to 97, then repeat: 976 / 990

Moving on to step 7:
976 divided by 990 is 0 with a remainder of 976.
The next digit of our result is 0. 
Result so far: 3990.0
If we take 0 away from 976, we end up with 976.
Include the next digit (8) from the dividend after 976, then repeat: 9768 / 990

Step 8:
990 goes into 9768 9 times with a remainder of 858.
The number 9 becomes the next digit in our result. 
Result so far: 39909.0
Deduct 8910 from 9768 and we're left with 858.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8580, and continue the process.

Moving on to step 9:
990 can be fit into 8580 8 times, resulting in a remainder of 660.
Record the quotient 8 as the next digit in the result. 
Result so far: 39909.8
If we take 7920 away from 8580, we end up with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Going ahead to step 10:
990 goes into 6600 6 times with a remainder of 660.
Put 6 as the next digit of the answer. 
Result so far: 39909.86
If we take 5940 away from 6600, we end up with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Step 11:
When dividing 6600 by 990, we get 6 with a remainder of 660.
Use 6 as the next digit of our solution. 
Result so far: 39909.866
Subtracting 5940 from 6600 leaves us with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

The quotient of the division is 39909.866, and the remainder is 0.066.