We divide 113503 by 28
We want to figure out the number of times 113503 can be divided by 28.

On to step 1:
28 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 28

Let's proceed to step 2:
If we divide 11 by 28, we get 0 and a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 11 to get 11.
Take the next digit (3) from the dividend and append it to 11, then repeat: 113 / 28

On to step 3:
When dividing 113 by 28, we get 4 with a remainder of 1.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 112 from 113 leaves us with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 28

On to step 4:
15 divided by 28 is 0 with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
If we take 0 away from 15, we end up with 15.
Fetch the next digit (0) from the dividend, attach it to 15 and continue: 150 / 28

Going ahead to step 5:
28 can be fit into 150 5 times, resulting in a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 405.0
The remainder is 10 after subtracting 140 from 150.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 28

Moving on to step 6:
If we divide 103 by 28, we get 3 and a remainder of 19.
Put 3 as the next digit of the answer. 
Result so far: 4053.0
Subtracting 84 from 103 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
If we divide 190 by 28, we get 6 and a remainder of 22.
The next digit of our result is 6. 
Result so far: 4053.6
Deduct 168 from 190 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 8:
28 goes into 220 7 times with a remainder of 24.
Use 7 as the next digit of our solution. 
Result so far: 4053.67
The remainder is 24 after subtracting 196 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 9:
28 can be fit into 240 8 times, resulting in a remainder of 16.
The next digit of our result is 8. 
Result so far: 4053.678
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 10:
If we divide 160 by 28, we get 5 and a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 4053.6785
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.

On to step 11:
28 goes into 200 7 times with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 4053.67857
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.

Moving on to step 12:
The number 28 fits into 40 1 times, leaving a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 4053.678571
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.

Step 13:
120 divided by 28 is 4 with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 4053.6785714
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.

On to step 14:
If we divide 80 by 28, we get 2 and a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 4053.67857142
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.

After the division, we end up with 4053.67857142 and a remainder of 2.4e-08.