401155 ÷ 20 
Our goal is to divide 401155 by 20.

Let's proceed to step 1:
When dividing 4 by 20, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 20

Moving on to step 2:
40 divided by 20 is 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 0 after subtracting 40 from 40.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 20

Let's proceed to step 3:
20 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 20.0
If we subtract 0 from 1, we get 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 20

Moving on to step 4:
The number 20 fits into 11 0 times, leaving a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 200.0
If we subtract 0 from 11, we get 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 20

Going ahead to step 5:
115 divided by 20 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 2005.0
The remainder is 15 after subtracting 100 from 115.
Bring next digit (5) of the dividend behind the 15 and repeat the process: 155 / 20

On to step 6:
20 can be fit into 155 7 times, resulting in a remainder of 15.
Write down 7 as next digit of the result. 
Result so far: 20057.0
Subtract 140 from 155 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
150 divided by 20 is 7 with a remainder of 10.
The next digit of our result is 7. 
Result so far: 20057.7
If we take 140 away from 150, 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.

Let's proceed to step 8:
100 divided by 20 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 20057.75
Subtracting 100 from 100 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.

Advancing to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 20057.75
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.

Let's proceed to step 10:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 20057.75
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.

Our division results in 20057.75 with a remaining 0.0.