39980456 ÷ 476 
Our goal is to divide 39980456 by 476.

Step 1:
3 divided by 476 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 476

Let's proceed to step 2:
39 divided by 476 is 0 with a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Grab the next digit (9) from the dividend, add it to 39, then carry on: 399 / 476

Moving on to step 3:
399 divided by 476 is 0 with a remainder of 399.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 399, we get 399.
Fetch the next digit (8) from the dividend, attach it to 399 and continue: 3998 / 476

Going ahead to step 4:
The number 476 fits into 3998 8 times, leaving a remainder of 190.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 190 after subtracting 3808 from 3998.
Take the next digit (0) from the dividend and append it to 190, then repeat: 1900 / 476

Step 5:
When dividing 1900 by 476, we get 3 with a remainder of 472.
Use 3 as the next digit of our solution. 
Result so far: 83.0
Subtracting 1428 from 1900 leaves us with 472.
Take the next digit (4) from the dividend and append it to 472, then repeat: 4724 / 476

Step 6:
When dividing 4724 by 476, we get 9 with a remainder of 440.
Put 9 as the next digit of the answer. 
Result so far: 839.0
Subtracting 4284 from 4724 leaves us with 440.
Append the next digit (5) from the dividend to 440 and continue with: 4405 / 476

Step 7:
When dividing 4405 by 476, we get 9 with a remainder of 121.
Use 9 as the next digit of our solution. 
Result so far: 8399.0
If we subtract 4284 from 4405, we get 121.
Bring next digit (6) of the dividend behind the 121 and repeat the process: 1216 / 476

Step 8:
1216 divided by 476 is 2 with a remainder of 264.
Write down 2 as next digit of the result. 
Result so far: 83992.0
Subtracting 952 from 1216 leaves us with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

On to step 9:
If we divide 2640 by 476, we get 5 and a remainder of 260.
Use 5 as the next digit of our solution. 
Result so far: 83992.5
Subtracting 2380 from 2640 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 10:
The number 476 fits into 2600 5 times, leaving a remainder of 220.
Use 5 as the next digit of our solution. 
Result so far: 83992.55
Subtracting 2380 from 2600 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

The final outcome is 83992.55, with a leftover of 0.22.