Let's divide 31185 by 20
We want to divide 31185 by 20.

Step 1:
20 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 20

On to step 2:
20 can be fit into 31 1 times, resulting in a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 20 from 31 to get 11.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 20

On to step 3:
When dividing 111 by 20, we get 5 with a remainder of 11.
The next digit of our result is 5. 
Result so far: 15.0
If we subtract 100 from 111, we get 11.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 20

Moving on to step 4:
118 divided by 20 is 5 with a remainder of 18.
Put 5 as the next digit of the answer. 
Result so far: 155.0
If we subtract 100 from 118, we get 18.
Bring next digit (5) of the dividend behind the 18 and repeat the process: 185 / 20

Advancing to step 5:
The number 20 fits into 185 9 times, leaving a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 1559.0
Subtracting 180 from 185 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 6:
20 goes into 50 2 times with a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 1559.2
Subtract 40 from 50 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.

Let's proceed to step 7:
The number 20 fits into 100 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 1559.25
If we subtract 100 from 100, 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.

Advancing to step 8:
0 divided by 20 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1559.25
Subtract 0 from 0 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 9:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 1559.25
Subtracting 0 from 0 leaves us 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.

The final result is 1559.25 with a remainder of 0.0.