390686 divided by 28 
Let's see how many times 28 fits into 390686.

Going ahead to step 1:
3 divided by 28 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 28

Going ahead to step 2:
28 can be fit into 39 1 times, resulting in a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 28 from 39 to get 11.
Include the next digit (0) from the dividend after 11, then repeat: 110 / 28

Advancing to step 3:
110 divided by 28 is 3 with a remainder of 26.
The next digit of our result is 3. 
Result so far: 13.0
Deduct 84 from 110 and we're left with 26.
Take the next digit (6) from the dividend and append it to 26, then repeat: 266 / 28

Going ahead to step 4:
28 can be fit into 266 9 times, resulting in a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 139.0
Subtracting 252 from 266 leaves us with 14.
Bring next digit (8) of the dividend behind the 14 and repeat the process: 148 / 28

Going ahead to step 5:
28 can be fit into 148 5 times, resulting in a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 1395.0
Subtracting 140 from 148 leaves us with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 28

Let's proceed to step 6:
28 can be fit into 86 3 times, resulting in a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 13953.0
Subtracting 84 from 86 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
The number 28 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 13953.0
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 8:
The number 28 fits into 200 7 times, leaving a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 13953.07
If we take 196 away from 200, we end up 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.

Let's proceed to step 9:
28 goes into 40 1 times with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 13953.071
If we subtract 28 from 40, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 10:
When dividing 120 by 28, we get 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 13953.0714
If we take 112 away from 120, 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.

Moving on to step 11:
The number 28 fits into 80 2 times, leaving a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 13953.07142
If we take 56 away from 80, 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.

Going ahead to step 12:
28 goes into 240 8 times with a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 13953.071428
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.

Advancing to step 13:
The number 28 fits into 160 5 times, leaving a remainder of 20.
The next digit of our result is 5. 
Result so far: 13953.0714285
If we take 140 away from 160, we end up 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:
When dividing 200 by 28, we get 7 with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 13953.07142857
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.

After the division, we end up with 13953.07142857 and a remainder of 4e-09.