We look at the division of 40025666 by 507 
We want to divide 40025666 by 507.

Step 1:
The number 507 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 507

Let's proceed to step 2:
40 divided by 507 is 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 40, we get 40.
Include the next digit (0) from the dividend after 40, then repeat: 400 / 507

Step 3:
400 divided by 507 is 0 with a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 400, we get 400.
Include the next digit (2) from the dividend after 400, then repeat: 4002 / 507

Step 4:
507 goes into 4002 7 times with a remainder of 453.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 3549 from 4002 leaves us with 453.
Bring next digit (5) of the dividend behind the 453 and repeat the process: 4535 / 507

Going ahead to step 5:
The number 507 fits into 4535 8 times, leaving a remainder of 479.
The number 8 becomes the next digit in our result. 
Result so far: 78.0
If we take 4056 away from 4535, we end up with 479.
Append the next digit (6) from the dividend to 479 and continue with: 4796 / 507

Let's proceed to step 6:
The number 507 fits into 4796 9 times, leaving a remainder of 233.
The next digit of our result is 9. 
Result so far: 789.0
If we take 4563 away from 4796, we end up with 233.
Take the next digit (6) from the dividend and append it to 233, then repeat: 2336 / 507

On to step 7:
The number 507 fits into 2336 4 times, leaving a remainder of 308.
Use 4 as the next digit of our solution. 
Result so far: 7894.0
The remainder is 308 after subtracting 2028 from 2336.
Take the next digit (6) from the dividend and append it to 308, then repeat: 3086 / 507

Moving on to step 8:
3086 divided by 507 is 6 with a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 78946.0
If we subtract 3042 from 3086, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 9:
507 can be fit into 440 0 times, resulting in a remainder of 440.
Record the quotient 0 as the next digit in the result. 
Result so far: 78946.0
Deduct 0 from 440 and we're left with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 10:
If we divide 4400 by 507, we get 8 and a remainder of 344.
Write down 8 as next digit of the result. 
Result so far: 78946.08
Subtracting 4056 from 4400 leaves us with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Let's proceed to step 11:
3440 divided by 507 is 6 with a remainder of 398.
Put 6 as the next digit of the answer. 
Result so far: 78946.086
Subtract 3042 from 3440 to get 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Let's proceed to step 12:
3980 divided by 507 is 7 with a remainder of 431.
The next digit of our result is 7. 
Result so far: 78946.0867
The remainder is 431 after subtracting 3549 from 3980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

Advancing to step 13:
507 goes into 4310 8 times with a remainder of 254.
Record the quotient 8 as the next digit in the result. 
Result so far: 78946.08678
The remainder is 254 after subtracting 4056 from 4310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Step 14:
507 can be fit into 2540 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 78946.086785
Subtract 2535 from 2540 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 15:
507 goes into 50 0 times with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 78946.086785
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 16:
When dividing 500 by 507, we get 0 with a remainder of 500.
The next digit of our result is 0. 
Result so far: 78946.086785
The remainder is 500 after subtracting 0 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

In conclusion, the division gives 78946.086785 with a balance of 5e-07.