We look at the division of 100531 by 20 
Let's see how many times 20 fits into 100531.

Moving on to step 1:
1 divided by 20 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 20

Going ahead to step 2:
10 divided by 20 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 10 to get 10.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 20

Going ahead to step 3:
When dividing 100 by 20, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 100 from 100, we get 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 20

Step 4:
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: 50.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 20

Step 5:
When dividing 53 by 20, we get 2 with a remainder of 13.
Use 2 as the next digit of our solution. 
Result so far: 502.0
Subtract 40 from 53 to get 13.
Grab the next digit (1) from the dividend, add it to 13, then carry on: 131 / 20

Let's proceed to step 6:
If we divide 131 by 20, we get 6 and a remainder of 11.
Put 6 as the next digit of the answer. 
Result so far: 5026.0
Subtract 120 from 131 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
If we divide 110 by 20, we get 5 and a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 5026.5
The remainder is 10 after subtracting 100 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
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: 5026.55
The remainder is 0 after subtracting 100 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 5026.55, and the remainder is 0.0.