Let's divide 401648 by 28
We're looking to find how many times 28 goes into 401648.

Step 1:
When dividing 4 by 28, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 28

Going ahead to step 2:
40 divided by 28 is 1 with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 28 from 40 leaves us with 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 28

On to step 3:
If we divide 121 by 28, we get 4 and a remainder of 9.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
The remainder is 9 after subtracting 112 from 121.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 28

Moving on to step 4:
When dividing 96 by 28, we get 3 with a remainder of 12.
The next digit of our result is 3. 
Result so far: 143.0
Subtract 84 from 96 to get 12.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 28

Going ahead to step 5:
28 can be fit into 124 4 times, resulting in a remainder of 12.
The next digit of our result is 4. 
Result so far: 1434.0
The remainder is 12 after subtracting 112 from 124.
Include the next digit (8) from the dividend after 12, then repeat: 128 / 28

Moving on to step 6:
When dividing 128 by 28, we get 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 14344.0
The remainder is 16 after subtracting 112 from 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 7:
28 goes into 160 5 times with a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 14344.5
Subtracting 140 from 160 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
28 goes into 200 7 times with a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 14344.57
Deduct 196 from 200 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
When dividing 40 by 28, we get 1 with a remainder of 12.
The next digit of our result is 1. 
Result so far: 14344.571
The remainder is 12 after subtracting 28 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 10:
120 divided by 28 is 4 with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 14344.5714
Subtracting 112 from 120 leaves us 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.

Step 11:
28 can be fit into 80 2 times, resulting in a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 14344.57142
Deduct 56 from 80 and we're left 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.

On to step 12:
If we divide 240 by 28, we get 8 and a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 14344.571428
If we subtract 224 from 240, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 13:
If we divide 160 by 28, we get 5 and a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 14344.5714285
Deduct 140 from 160 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 14:
28 goes into 200 7 times with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 14344.57142857
Subtracting 196 from 200 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 14344.57142857 with a remaining 4e-09.