83990480 ÷ 400 
We're looking to find how many times 400 goes into 83990480.

Let's proceed to step 1:
When dividing 8 by 400, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 400

Going ahead to step 2:
If we divide 83 by 400, we get 0 and a remainder of 83.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 83 leaves us with 83.
Grab the next digit (9) from the dividend, add it to 83, then carry on: 839 / 400

Step 3:
400 goes into 839 2 times with a remainder of 39.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 800 away from 839, we end up with 39.
Bring next digit (9) of the dividend behind the 39 and repeat the process: 399 / 400

Let's proceed to step 4:
When dividing 399 by 400, we get 0 with a remainder of 399.
Write down 0 as next digit of the result. 
Result so far: 20.0
Deduct 0 from 399 and we're left with 399.
Fetch the next digit (0) from the dividend, attach it to 399 and continue: 3990 / 400

Advancing to step 5:
400 goes into 3990 9 times with a remainder of 390.
The next digit of our result is 9. 
Result so far: 209.0
Subtract 3600 from 3990 to get 390.
Include the next digit (4) from the dividend after 390, then repeat: 3904 / 400

Let's proceed to step 6:
400 can be fit into 3904 9 times, resulting in a remainder of 304.
Use 9 as the next digit of our solution. 
Result so far: 2099.0
Subtracting 3600 from 3904 leaves us with 304.
Append the next digit (8) from the dividend to 304 and continue with: 3048 / 400

Let's proceed to step 7:
3048 divided by 400 is 7 with a remainder of 248.
Put 7 as the next digit of the answer. 
Result so far: 20997.0
Subtract 2800 from 3048 to get 248.
Include the next digit (0) from the dividend after 248, then repeat: 2480 / 400

Moving on to step 8:
2480 divided by 400 is 6 with a remainder of 80.
Write down 6 as next digit of the result. 
Result so far: 209976.0
Subtracting 2400 from 2480 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 9:
When dividing 800 by 400, we get 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 209976.2
Subtracting 800 from 800 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
When dividing 0 by 400, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 209976.2
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 11:
If we divide 0 by 400, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 209976.2
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 209976.2, and the remainder is 0.0.