We're dividing 351450 by 20 
We're looking to find how many times 20 goes into 351450.

Going ahead to 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 subtract 0 from 3, we get 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 20

Going ahead to step 2:
35 divided by 20 is 1 with a remainder of 15.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 20 from 35, we get 15.
Include the next digit (1) from the dividend after 15, then repeat: 151 / 20

Moving on to step 3:
The number 20 fits into 151 7 times, leaving a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Subtracting 140 from 151 leaves us with 11.
Include the next digit (4) from the dividend after 11, then repeat: 114 / 20

Moving on to step 4:
When dividing 114 by 20, we get 5 with a remainder of 14.
Put 5 as the next digit of the answer. 
Result so far: 175.0
Subtract 100 from 114 to get 14.
Take the next digit (5) from the dividend and append it to 14, then repeat: 145 / 20

Going ahead to step 5:
The number 20 fits into 145 7 times, leaving a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 1757.0
If we subtract 140 from 145, we get 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 20

Moving on to step 6:
If we divide 50 by 20, we get 2 and a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 17572.0
If we subtract 40 from 50, 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.

On to step 7:
20 goes into 100 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 17572.5
Deduct 100 from 100 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.

Let's proceed to step 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 17572.5
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.

On to step 9:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 17572.5
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.

In conclusion, the division gives 17572.5 with a balance of 0.0.