39026571 ÷ 646 
We want to figure out the number of times 39026571 can be divided by 646.

Going ahead to step 1:
646 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
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 / 646

On to step 2:
39 divided by 646 is 0 with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Grab the next digit (0) from the dividend, add it to 39, then carry on: 390 / 646

Advancing to step 3:
If we divide 390 by 646, we get 0 and a remainder of 390.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 390 to get 390.
Take the next digit (2) from the dividend and append it to 390, then repeat: 3902 / 646

Step 4:
When dividing 3902 by 646, we get 6 with a remainder of 26.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 3876 from 3902 leaves us with 26.
Take the next digit (6) from the dividend and append it to 26, then repeat: 266 / 646

On to step 5:
646 can be fit into 266 0 times, resulting in a remainder of 266.
Write down 0 as next digit of the result. 
Result so far: 60.0
If we take 0 away from 266, we end up with 266.
Take the next digit (5) from the dividend and append it to 266, then repeat: 2665 / 646

Let's proceed to step 6:
The number 646 fits into 2665 4 times, leaving a remainder of 81.
Use 4 as the next digit of our solution. 
Result so far: 604.0
Subtracting 2584 from 2665 leaves us with 81.
Fetch the next digit (7) from the dividend, attach it to 81 and continue: 817 / 646

On to step 7:
817 divided by 646 is 1 with a remainder of 171.
Record the quotient 1 as the next digit in the result. 
Result so far: 6041.0
Deduct 646 from 817 and we're left with 171.
Append the next digit (1) from the dividend to 171 and continue with: 1711 / 646

Let's proceed to step 8:
646 goes into 1711 2 times with a remainder of 419.
The number 2 becomes the next digit in our result. 
Result so far: 60412.0
If we take 1292 away from 1711, we end up with 419.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

Going ahead to step 9:
When dividing 4190 by 646, we get 6 with a remainder of 314.
The next digit of our result is 6. 
Result so far: 60412.6
Deduct 3876 from 4190 and we're left with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Going ahead to step 10:
When dividing 3140 by 646, we get 4 with a remainder of 556.
The number 4 becomes the next digit in our result. 
Result so far: 60412.64
If we subtract 2584 from 3140, we get 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Going ahead to step 11:
5560 divided by 646 is 8 with a remainder of 392.
Write down 8 as next digit of the result. 
Result so far: 60412.648
Subtract 5168 from 5560 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

On to step 12:
The number 646 fits into 3920 6 times, leaving a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 60412.6486
Subtracting 3876 from 3920 leaves us 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.

On to step 13:
646 can be fit into 440 0 times, resulting in a remainder of 440.
The number 0 becomes the next digit in our result. 
Result so far: 60412.6486
If we take 0 away from 440, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Going ahead to step 14:
646 can be fit into 4400 6 times, resulting in a remainder of 524.
Write down 6 as next digit of the result. 
Result so far: 60412.648606
Subtracting 3876 from 4400 leaves us with 524.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5240, and continue the process.

Going ahead to step 15:
646 goes into 5240 8 times with a remainder of 72.
Put 8 as the next digit of the answer. 
Result so far: 60412.6486068
Subtracting 5168 from 5240 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 16:
646 can be fit into 720 1 times, resulting in a remainder of 74.
Write down 1 as next digit of the result. 
Result so far: 60412.64860681
If we subtract 646 from 720, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

In conclusion, the division gives 60412.64860681 with a balance of 7.4e-08.