825161 ÷ 20 
The aim is to understand the frequency of 20 in 825161.

Advancing to step 1:
20 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 20

Step 2:
82 divided by 20 is 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 80 away from 82, we end up with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 20

Step 3:
If we divide 25 by 20, we get 1 and a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 41.0
If we take 20 away from 25, we end up with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 20

Advancing to step 4:
20 can be fit into 51 2 times, resulting in a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 412.0
If we subtract 40 from 51, we get 11.
Bring next digit (6) of the dividend behind the 11 and repeat the process: 116 / 20

Step 5:
The number 20 fits into 116 5 times, leaving a remainder of 16.
The number 5 becomes the next digit in our result. 
Result so far: 4125.0
Subtracting 100 from 116 leaves us with 16.
Fetch the next digit (1) from the dividend, attach it to 16 and continue: 161 / 20

Advancing to step 6:
When dividing 161 by 20, we get 8 with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 41258.0
Deduct 160 from 161 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
20 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 41258.0
If we take 0 away from 10, we end up 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.

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: 41258.05
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.

Let's proceed to step 9:
20 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 41258.05
Deduct 0 from 0 and we're left 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.

Let's proceed to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 41258.05
Deduct 0 from 0 and we're left 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 quotient of the division is 41258.05, and the remainder is 0.0.