We look at the division of 340454 by 20 
Our goal is to divide 340454 by 20.

Let's proceed to step 1:
3 divided by 20 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 20

Advancing to step 2:
If we divide 34 by 20, we get 1 and a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 20 from 34, we get 14.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 20

Let's proceed to step 3:
If we divide 140 by 20, we get 7 and a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we subtract 140 from 140, we get 0.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 20

On to step 4:
The number 20 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 170.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 20

Let's proceed to step 5:
When dividing 45 by 20, we get 2 with a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 1702.0
Deduct 40 from 45 and we're left with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 20

Moving on to step 6:
20 can be fit into 54 2 times, resulting in a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 17022.0
Subtract 40 from 54 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 7:
When dividing 140 by 20, we get 7 with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 17022.7
Deduct 140 from 140 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.

Advancing to step 8:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 17022.7
If we subtract 0 from 0, 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.

On to step 9:
20 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 17022.7
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 outcome is 17022.7, with a leftover of 0.0.