746185 ÷ 20 
The aim is to understand the frequency of 20 in 746185.

On to step 1:
7 divided by 20 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 20

On to step 2:
If we divide 74 by 20, we get 3 and a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtracting 60 from 74 leaves us with 14.
Fetch the next digit (6) from the dividend, attach it to 14 and continue: 146 / 20

Step 3:
The number 20 fits into 146 7 times, leaving a remainder of 6.
Use 7 as the next digit of our solution. 
Result so far: 37.0
If we take 140 away from 146, we end up with 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 20

Let's proceed to step 4:
61 divided by 20 is 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 373.0
If we take 60 away from 61, we end up with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 20

On to step 5:
When dividing 18 by 20, we get 0 with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 3730.0
Deduct 0 from 18 and we're left with 18.
Include the next digit (5) from the dividend after 18, then repeat: 185 / 20

Moving on to step 6:
185 divided by 20 is 9 with a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 37309.0
Deduct 180 from 185 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
The number 20 fits into 50 2 times, leaving a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 37309.2
Subtract 40 from 50 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.

Advancing to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 37309.25
Deduct 100 from 100 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.

Step 9:
20 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 37309.25
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.

Moving on to step 10:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 37309.25
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.

The final result is 37309.25 with a remainder of 0.0.