40395996 divided by 210 
Our goal is to divide 40395996 by 210.

Moving on to step 1:
If we divide 4 by 210, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 210

Step 2:
210 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 40, we get 40.
Include the next digit (3) from the dividend after 40, then repeat: 403 / 210

On to step 3:
The number 210 fits into 403 1 times, leaving a remainder of 193.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 210 from 403 leaves us with 193.
Fetch the next digit (9) from the dividend, attach it to 193 and continue: 1939 / 210

Moving on to step 4:
If we divide 1939 by 210, we get 9 and a remainder of 49.
The next digit of our result is 9. 
Result so far: 19.0
Subtracting 1890 from 1939 leaves us with 49.
Include the next digit (5) from the dividend after 49, then repeat: 495 / 210

Moving on to step 5:
The number 210 fits into 495 2 times, leaving a remainder of 75.
The number 2 becomes the next digit in our result. 
Result so far: 192.0
Subtract 420 from 495 to get 75.
Append the next digit (9) from the dividend to 75 and continue with: 759 / 210

Let's proceed to step 6:
210 can be fit into 759 3 times, resulting in a remainder of 129.
The number 3 becomes the next digit in our result. 
Result so far: 1923.0
Deduct 630 from 759 and we're left with 129.
Bring next digit (9) of the dividend behind the 129 and repeat the process: 1299 / 210

On to step 7:
1299 divided by 210 is 6 with a remainder of 39.
Write down 6 as next digit of the result. 
Result so far: 19236.0
The remainder is 39 after subtracting 1260 from 1299.
Include the next digit (6) from the dividend after 39, then repeat: 396 / 210

Let's proceed to step 8:
210 can be fit into 396 1 times, resulting in a remainder of 186.
Record the quotient 1 as the next digit in the result. 
Result so far: 192361.0
Subtract 210 from 396 to get 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Let's proceed to step 9:
When dividing 1860 by 210, we get 8 with a remainder of 180.
Record the quotient 8 as the next digit in the result. 
Result so far: 192361.8
Subtracting 1680 from 1860 leaves us with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 10:
210 goes into 1800 8 times with a remainder of 120.
The next digit of our result is 8. 
Result so far: 192361.88
Deduct 1680 from 1800 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

The final outcome is 192361.88, with a leftover of 0.12.