We look at the division of 399900 by 49 
We're looking to find how many times 49 goes into 399900.

Advancing to step 1:
49 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 49

Moving on to step 2:
49 goes into 39 0 times with a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Take the next digit (9) from the dividend and append it to 39, then repeat: 399 / 49

Going ahead to step 3:
49 can be fit into 399 8 times, resulting in a remainder of 7.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtracting 392 from 399 leaves us with 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 49

Going ahead to step 4:
49 can be fit into 79 1 times, resulting in a remainder of 30.
Put 1 as the next digit of the answer. 
Result so far: 81.0
If we subtract 49 from 79, we get 30.
Bring next digit (0) of the dividend behind the 30 and repeat the process: 300 / 49

Step 5:
If we divide 300 by 49, we get 6 and a remainder of 6.
The next digit of our result is 6. 
Result so far: 816.0
The remainder is 6 after subtracting 294 from 300.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 49

Moving on to step 6:
49 goes into 60 1 times with a remainder of 11.
The next digit of our result is 1. 
Result so far: 8161.0
Deduct 49 from 60 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 7:
If we divide 110 by 49, we get 2 and a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 8161.2
Deduct 98 from 110 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 8:
120 divided by 49 is 2 with a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 8161.22
Deduct 98 from 120 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final outcome is 8161.22, with a leftover of 0.022.