Let's divide 501912 by 20
We want to figure out the number of times 501912 can be divided by 20.

Moving on to step 1:
When dividing 5 by 20, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 20

Moving on to step 2:
20 goes into 50 2 times with a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 40 from 50 and we're left with 10.
Fetch the next digit (1) from the dividend, attach it to 10 and continue: 101 / 20

On to step 3:
The number 20 fits into 101 5 times, leaving a remainder of 1.
The next digit of our result is 5. 
Result so far: 25.0
If we subtract 100 from 101, we get 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 20

Step 4:
20 can be fit into 19 0 times, resulting in a remainder of 19.
Use 0 as the next digit of our solution. 
Result so far: 250.0
Deduct 0 from 19 and we're left with 19.
Fetch the next digit (1) from the dividend, attach it to 19 and continue: 191 / 20

Going ahead to step 5:
If we divide 191 by 20, we get 9 and a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 2509.0
Subtracting 180 from 191 leaves us with 11.
Grab the next digit (2) from the dividend, add it to 11, then carry on: 112 / 20

Moving on to step 6:
When dividing 112 by 20, we get 5 with a remainder of 12.
The number 5 becomes the next digit in our result. 
Result so far: 25095.0
Subtract 100 from 112 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 7:
20 goes into 120 6 times with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 25095.6
If we take 120 away from 120, 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 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 25095.6
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.

Advancing to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 25095.6
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.

The final result is 25095.6 with a remainder of 0.0.