We're dividing 105407 by 20 
We want to figure out the number of times 105407 can be divided by 20.

Advancing to step 1:
20 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 20

Advancing to step 2:
20 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 10 to get 10.
Append the next digit (5) from the dividend to 10 and continue with: 105 / 20

Going ahead to step 3:
If we divide 105 by 20, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 5.0
If we take 100 away from 105, we end up with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 20

Going ahead to step 4:
20 goes into 54 2 times with a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 52.0
Subtracting 40 from 54 leaves us with 14.
Bring next digit (0) of the dividend behind the 14 and repeat the process: 140 / 20

On to step 5:
20 can be fit into 140 7 times, resulting in a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 527.0
If we subtract 140 from 140, we get 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 20

Step 6:
If we divide 7 by 20, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 5270.0
If we take 0 away from 7, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
70 divided by 20 is 3 with a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 5270.3
Subtract 60 from 70 to 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.

Moving on to step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 5270.35
If we take 100 away from 100, 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.

Step 9:
20 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 5270.35
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.

On to step 10:
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: 5270.35
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.

The final outcome is 5270.35, with a leftover of 0.0.