Let's divide 513645 by 28
Let's see how many times 28 fits into 513645.

On to step 1:
28 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 28

Advancing to step 2:
If we divide 51 by 28, we get 1 and a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 28 from 51 to get 23.
Include the next digit (3) from the dividend after 23, then repeat: 233 / 28

Moving on to step 3:
233 divided by 28 is 8 with a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Deduct 224 from 233 and we're left with 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 28

Step 4:
If we divide 96 by 28, we get 3 and a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 183.0
If we subtract 84 from 96, we get 12.
Bring next digit (4) of the dividend behind the 12 and repeat the process: 124 / 28

Let's proceed to step 5:
28 goes into 124 4 times with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 1834.0
If we take 112 away from 124, we end up with 12.
Append the next digit (5) from the dividend to 12 and continue with: 125 / 28

Advancing to step 6:
28 goes into 125 4 times with a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 18344.0
If we take 112 away from 125, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 7:
28 goes into 130 4 times with a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 18344.4
The remainder is 18 after subtracting 112 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 8:
180 divided by 28 is 6 with a remainder of 12.
The next digit of our result is 6. 
Result so far: 18344.46
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
If we divide 120 by 28, we get 4 and a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 18344.464
Subtract 112 from 120 to get 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 10:
28 goes into 80 2 times with a remainder of 24.
The next digit of our result is 2. 
Result so far: 18344.4642
Subtract 56 from 80 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 11:
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: 18344.46428
Deduct 224 from 240 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 12:
160 divided by 28 is 5 with a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 18344.464285
Subtract 140 from 160 to 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.

On to step 13:
The number 28 fits into 200 7 times, leaving a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 18344.4642857
The remainder is 4 after subtracting 196 from 200.
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 14:
28 goes into 40 1 times with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 18344.46428571
If we take 28 away from 40, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 18344.46428571, with a leftover of 1.2e-08.