Let's divide 156403 by 30
We want to figure out the number of times 156403 can be divided by 30.

On to step 1:
The number 30 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 30

Moving on to step 2:
When dividing 15 by 30, we get 0 with a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 30

On to step 3:
When dividing 156 by 30, we get 5 with a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 150 from 156 and we're left with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 30

Step 4:
30 goes into 64 2 times with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 52.0
The remainder is 4 after subtracting 60 from 64.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 30

On to step 5:
When dividing 40 by 30, we get 1 with a remainder of 10.
The next digit of our result is 1. 
Result so far: 521.0
If we subtract 30 from 40, we get 10.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 30

Step 6:
30 goes into 103 3 times with a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 5213.0
Subtracting 90 from 103 leaves us 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.

Step 7:
When dividing 130 by 30, we get 4 with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 5213.4
Subtract 120 from 130 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
100 divided by 30 is 3 with a remainder of 10.
Put 3 as the next digit of the answer. 
Result so far: 5213.43
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
100 divided by 30 is 3 with a remainder of 10.
The next digit of our result is 3. 
Result so far: 5213.433
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 5213.433, with a leftover of 0.001.