Let's divide 39986864 by 49
We're looking to find how many times 49 goes into 39986864.

Going ahead to step 1:
49 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 49

Let's proceed to step 2:
49 can be fit into 39 0 times, resulting in a remainder of 39.
Use 0 as the next digit of our solution. 
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 / 49

Advancing to step 3:
49 can be fit into 399 8 times, resulting in a remainder of 7.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 392 away from 399, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 49

Advancing to step 4:
78 divided by 49 is 1 with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
The remainder is 29 after subtracting 49 from 78.
Include the next digit (6) from the dividend after 29, then repeat: 296 / 49

Step 5:
The number 49 fits into 296 6 times, leaving a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 816.0
The remainder is 2 after subtracting 294 from 296.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 49

Advancing to step 6:
49 goes into 28 0 times with a remainder of 28.
The next digit of our result is 0. 
Result so far: 8160.0
If we subtract 0 from 28, we get 28.
Append the next digit (6) from the dividend to 28 and continue with: 286 / 49

Advancing to step 7:
49 can be fit into 286 5 times, resulting in a remainder of 41.
Use 5 as the next digit of our solution. 
Result so far: 81605.0
Subtracting 245 from 286 leaves us with 41.
Fetch the next digit (4) from the dividend, attach it to 41 and continue: 414 / 49

Going ahead to step 8:
49 goes into 414 8 times with a remainder of 22.
The next digit of our result is 8. 
Result so far: 816058.0
Deduct 392 from 414 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.

Advancing to step 9:
49 goes into 220 4 times with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 816058.4
Subtracting 196 from 220 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 10:
If we divide 240 by 49, we get 4 and a remainder of 44.
The next digit of our result is 4. 
Result so far: 816058.44
If we take 196 away from 240, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 816058.44, with a leftover of 0.044.