123603 divided by 48 
We want to divide 123603 by 48.

Advancing to step 1:
1 divided by 48 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 48

On to step 2:
48 can be fit into 12 0 times, resulting in a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Bring next digit (3) of the dividend behind the 12 and repeat the process: 123 / 48

Going ahead to step 3:
If we divide 123 by 48, we get 2 and a remainder of 27.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 96 from 123 to get 27.
Include the next digit (6) from the dividend after 27, then repeat: 276 / 48

Going ahead to step 4:
48 can be fit into 276 5 times, resulting in a remainder of 36.
Write down 5 as next digit of the result. 
Result so far: 25.0
The remainder is 36 after subtracting 240 from 276.
Append the next digit (0) from the dividend to 36 and continue with: 360 / 48

Let's proceed to step 5:
48 goes into 360 7 times with a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 257.0
Deduct 336 from 360 and we're left with 24.
Bring next digit (3) of the dividend behind the 24 and repeat the process: 243 / 48

Advancing to step 6:
243 divided by 48 is 5 with a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 2575.0
If we subtract 240 from 243, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
The number 48 fits into 30 0 times, leaving a remainder of 30.
The next digit of our result is 0. 
Result so far: 2575.0
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
If we divide 300 by 48, we get 6 and a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 2575.06
Subtracting 288 from 300 leaves us 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.

Step 9:
120 divided by 48 is 2 with a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 2575.062
If we take 96 away from 120, 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.

On to step 10:
When dividing 240 by 48, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 2575.0625
Subtract 240 from 240 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
48 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 2575.0625
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 12:
When dividing 0 by 48, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2575.0625
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 2575.0625, with a leftover of 0.0.