354593 ÷ 20 
We want to divide 354593 by 20.

On to step 1:
20 can be fit into 3 0 times, resulting in 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.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 20

Step 2:
20 goes into 35 1 times with a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 20 from 35, we get 15.
Append the next digit (4) from the dividend to 15 and continue with: 154 / 20

Moving on to step 3:
When dividing 154 by 20, we get 7 with a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 17.0
If we subtract 140 from 154, we get 14.
Take the next digit (5) from the dividend and append it to 14, then repeat: 145 / 20

Advancing to step 4:
If we divide 145 by 20, we get 7 and a remainder of 5.
The next digit of our result is 7. 
Result so far: 177.0
Deduct 140 from 145 and we're left with 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 20

On to step 5:
20 can be fit into 59 2 times, resulting in a remainder of 19.
Put 2 as the next digit of the answer. 
Result so far: 1772.0
Subtract 40 from 59 to get 19.
Grab the next digit (3) from the dividend, add it to 19, then carry on: 193 / 20

On to step 6:
193 divided by 20 is 9 with a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 17729.0
Subtract 180 from 193 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 7:
When dividing 130 by 20, we get 6 with a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 17729.6
The remainder is 10 after subtracting 120 from 130.
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 8:
When dividing 100 by 20, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 17729.65
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 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 17729.65
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.

Going ahead to step 10:
0 divided by 20 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 17729.65
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 17729.65, with a leftover of 0.0.