We look at the division of 3946261 by 512 
We want to figure out the number of times 3946261 can be divided by 512.

Step 1:
When dividing 3 by 512, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 512

On to step 2:
The number 512 fits into 39 0 times, leaving a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Include the next digit (4) from the dividend after 39, then repeat: 394 / 512

On to step 3:
512 can be fit into 394 0 times, resulting in a remainder of 394.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 394, we end up with 394.
Bring next digit (6) of the dividend behind the 394 and repeat the process: 3946 / 512

Step 4:
The number 512 fits into 3946 7 times, leaving a remainder of 362.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we take 3584 away from 3946, we end up with 362.
Fetch the next digit (2) from the dividend, attach it to 362 and continue: 3622 / 512

Advancing to step 5:
If we divide 3622 by 512, we get 7 and a remainder of 38.
Use 7 as the next digit of our solution. 
Result so far: 77.0
Subtract 3584 from 3622 to get 38.
Take the next digit (6) from the dividend and append it to 38, then repeat: 386 / 512

Going ahead to step 6:
512 can be fit into 386 0 times, resulting in a remainder of 386.
Record the quotient 0 as the next digit in the result. 
Result so far: 770.0
Subtracting 0 from 386 leaves us with 386.
Fetch the next digit (1) from the dividend, attach it to 386 and continue: 3861 / 512

Step 7:
If we divide 3861 by 512, we get 7 and a remainder of 277.
Use 7 as the next digit of our solution. 
Result so far: 7707.0
Subtract 3584 from 3861 to get 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Let's proceed to step 8:
The number 512 fits into 2770 5 times, leaving a remainder of 210.
Use 5 as the next digit of our solution. 
Result so far: 7707.5
Subtracting 2560 from 2770 leaves us with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Going ahead to step 9:
2100 divided by 512 is 4 with a remainder of 52.
Write down 4 as next digit of the result. 
Result so far: 7707.54
If we subtract 2048 from 2100, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 10:
512 can be fit into 520 1 times, resulting in a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 7707.541
If we take 512 away from 520, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 11:
512 goes into 80 0 times with a remainder of 80.
The next digit of our result is 0. 
Result so far: 7707.541
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 12:
The number 512 fits into 800 1 times, leaving a remainder of 288.
The number 1 becomes the next digit in our result. 
Result so far: 7707.54101
Subtracting 512 from 800 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 13:
2880 divided by 512 is 5 with a remainder of 320.
Record the quotient 5 as the next digit in the result. 
Result so far: 7707.541015
Subtract 2560 from 2880 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 14:
The number 512 fits into 3200 6 times, leaving a remainder of 128.
The number 6 becomes the next digit in our result. 
Result so far: 7707.5410156
Subtracting 3072 from 3200 leaves us with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Step 15:
512 can be fit into 1280 2 times, resulting in a remainder of 256.
The next digit of our result is 2. 
Result so far: 7707.54101562
If we take 1024 away from 1280, we end up with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

The final outcome is 7707.54101562, with a leftover of 2.56e-07.