162490 ÷ 20 
We want to figure out the number of times 162490 can be divided by 20.

Let's proceed to step 1:
1 divided by 20 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 20

Moving on to step 2:
20 goes into 16 0 times with a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Fetch the next digit (2) from the dividend, attach it to 16 and continue: 162 / 20

Step 3:
The number 20 fits into 162 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 160 away from 162, we end up with 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 20

Step 4:
The number 20 fits into 24 1 times, leaving a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 81.0
The remainder is 4 after subtracting 20 from 24.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 20

Step 5:
If we divide 49 by 20, we get 2 and a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 812.0
The remainder is 9 after subtracting 40 from 49.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 20

On to step 6:
20 can be fit into 90 4 times, resulting in a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 8124.0
Subtracting 80 from 90 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 8124.5
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.

On to step 8:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 8124.5
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.

Moving on 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: 8124.5
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.

Our division results in 8124.5 with a remaining 0.0.