We divide 138603 by 30
Our goal is to divide 138603 by 30.

Moving on to step 1:
When dividing 1 by 30, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 30

Let's proceed to step 2:
13 divided by 30 is 0 with a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 30

Moving on to step 3:
30 goes into 138 4 times with a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 120 from 138 to get 18.
Take the next digit (6) from the dividend and append it to 18, then repeat: 186 / 30

Let's proceed to step 4:
186 divided by 30 is 6 with a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 46.0
If we take 180 away from 186, we end up with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 30

Moving on to step 5:
If we divide 60 by 30, we get 2 and a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 462.0
Deduct 60 from 60 and we're left with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 30

Advancing to step 6:
When dividing 3 by 30, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 4620.0
Deduct 0 from 3 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
30 divided by 30 is 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 4620.1
Subtract 30 from 30 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.

Going ahead to step 8:
The number 30 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 4620.1
The remainder is 0 after subtracting 0 from 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 9:
30 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4620.1
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.

In conclusion, the division gives 4620.1 with a balance of 0.0.