We're dividing 39664528 by 286 
Let's see how many times 286 fits into 39664528.

Advancing to step 1:
The number 286 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 286

Advancing to step 2:
When dividing 39 by 286, we get 0 with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Include the next digit (6) from the dividend after 39, then repeat: 396 / 286

Moving on to step 3:
396 divided by 286 is 1 with a remainder of 110.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 286 from 396 to get 110.
Bring next digit (6) of the dividend behind the 110 and repeat the process: 1106 / 286

On to step 4:
If we divide 1106 by 286, we get 3 and a remainder of 248.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtract 858 from 1106 to get 248.
Fetch the next digit (4) from the dividend, attach it to 248 and continue: 2484 / 286

Going ahead to step 5:
286 can be fit into 2484 8 times, resulting in a remainder of 196.
Record the quotient 8 as the next digit in the result. 
Result so far: 138.0
Subtract 2288 from 2484 to get 196.
Take the next digit (5) from the dividend and append it to 196, then repeat: 1965 / 286

Let's proceed to step 6:
If we divide 1965 by 286, we get 6 and a remainder of 249.
Put 6 as the next digit of the answer. 
Result so far: 1386.0
Subtracting 1716 from 1965 leaves us with 249.
Include the next digit (2) from the dividend after 249, then repeat: 2492 / 286

Moving on to step 7:
If we divide 2492 by 286, we get 8 and a remainder of 204.
Write down 8 as next digit of the result. 
Result so far: 13868.0
Deduct 2288 from 2492 and we're left with 204.
Grab the next digit (8) from the dividend, add it to 204, then carry on: 2048 / 286

On to step 8:
286 goes into 2048 7 times with a remainder of 46.
Record the quotient 7 as the next digit in the result. 
Result so far: 138687.0
Subtract 2002 from 2048 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 9:
460 divided by 286 is 1 with a remainder of 174.
Put 1 as the next digit of the answer. 
Result so far: 138687.1
If we subtract 286 from 460, we get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Step 10:
If we divide 1740 by 286, we get 6 and a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 138687.16
If we take 1716 away from 1740, we end up 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.

Moving on to step 11:
240 divided by 286 is 0 with a remainder of 240.
Record the quotient 0 as the next digit in the result. 
Result so far: 138687.16
If we subtract 0 from 240, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 12:
If we divide 2400 by 286, we get 8 and a remainder of 112.
Use 8 as the next digit of our solution. 
Result so far: 138687.1608
If we subtract 2288 from 2400, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Step 13:
The number 286 fits into 1120 3 times, leaving a remainder of 262.
The next digit of our result is 3. 
Result so far: 138687.16083
If we subtract 858 from 1120, we get 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Step 14:
286 goes into 2620 9 times with a remainder of 46.
Put 9 as the next digit of the answer. 
Result so far: 138687.160839
Subtracting 2574 from 2620 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 15:
When dividing 460 by 286, we get 1 with a remainder of 174.
The next digit of our result is 1. 
Result so far: 138687.1608391
If we subtract 286 from 460, we get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Moving on to step 16:
If we divide 1740 by 286, we get 6 and a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 138687.16083916
The remainder is 24 after subtracting 1716 from 1740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 138687.16083916, with a leftover of 2.4e-08.