39388371 ÷ 990 
We're looking to find how many times 990 goes into 39388371.

Going ahead to step 1:
When dividing 3 by 990, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 990

Moving on to step 2:
The number 990 fits into 39 0 times, leaving a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Append the next digit (3) from the dividend to 39 and continue with: 393 / 990

Let's proceed to step 3:
393 divided by 990 is 0 with a remainder of 393.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 393, we end up with 393.
Fetch the next digit (8) from the dividend, attach it to 393 and continue: 3938 / 990

Let's proceed to step 4:
When dividing 3938 by 990, we get 3 with a remainder of 968.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 2970 away from 3938, we end up with 968.
Include the next digit (8) from the dividend after 968, then repeat: 9688 / 990

Advancing to step 5:
The number 990 fits into 9688 9 times, leaving a remainder of 778.
Write down 9 as next digit of the result. 
Result so far: 39.0
The remainder is 778 after subtracting 8910 from 9688.
Take the next digit (3) from the dividend and append it to 778, then repeat: 7783 / 990

Going ahead to step 6:
990 goes into 7783 7 times with a remainder of 853.
Write down 7 as next digit of the result. 
Result so far: 397.0
The remainder is 853 after subtracting 6930 from 7783.
Bring next digit (7) of the dividend behind the 853 and repeat the process: 8537 / 990

On to step 7:
990 can be fit into 8537 8 times, resulting in a remainder of 617.
Record the quotient 8 as the next digit in the result. 
Result so far: 3978.0
Subtract 7920 from 8537 to get 617.
Append the next digit (1) from the dividend to 617 and continue with: 6171 / 990

Let's proceed to step 8:
The number 990 fits into 6171 6 times, leaving a remainder of 231.
Use 6 as the next digit of our solution. 
Result so far: 39786.0
If we take 5940 away from 6171, we end up with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

On to step 9:
When dividing 2310 by 990, we get 2 with a remainder of 330.
The number 2 becomes the next digit in our result. 
Result so far: 39786.2
Subtract 1980 from 2310 to get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Step 10:
990 goes into 3300 3 times with a remainder of 330.
Record the quotient 3 as the next digit in the result. 
Result so far: 39786.23
If we subtract 2970 from 3300, we get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 11:
3300 divided by 990 is 3 with a remainder of 330.
Write down 3 as next digit of the result. 
Result so far: 39786.233
If we subtract 2970 from 3300, we get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

After the division, we end up with 39786.233 and a remainder of 0.033.