We're dividing 355810 by 20 
We want to divide 355810 by 20.

On to step 1:
20 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 20

Let's proceed to step 2:
35 divided by 20 is 1 with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 20 away from 35, we end up with 15.
Include the next digit (5) from the dividend after 15, then repeat: 155 / 20

Advancing to step 3:
20 can be fit into 155 7 times, resulting in a remainder of 15.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtract 140 from 155 to get 15.
Include the next digit (8) from the dividend after 15, then repeat: 158 / 20

Moving on to step 4:
158 divided by 20 is 7 with a remainder of 18.
Write down 7 as next digit of the result. 
Result so far: 177.0
If we subtract 140 from 158, we get 18.
Include the next digit (1) from the dividend after 18, then repeat: 181 / 20

Let's proceed to step 5:
When dividing 181 by 20, we get 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 1779.0
Deduct 180 from 181 and we're left with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 20

Step 6:
20 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 17790.0
If we subtract 0 from 10, we 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.

Advancing to step 7:
20 goes into 100 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 17790.5
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.

Step 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 17790.5
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.

Moving on to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 17790.5
If we take 0 away from 0, we end up 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.

Our division results in 17790.5 with a remaining 0.0.