We look at the division of 673860 by 20 
The aim is to understand the frequency of 20 in 673860.

Let's proceed to step 1:
20 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 20

Moving on to step 2:
The number 20 fits into 67 3 times, leaving a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 60 away from 67, we end up with 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 20

Let's proceed to step 3:
The number 20 fits into 73 3 times, leaving a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 33.0
If we take 60 away from 73, we end up with 13.
Bring next digit (8) of the dividend behind the 13 and repeat the process: 138 / 20

Step 4:
20 can be fit into 138 6 times, resulting in a remainder of 18.
The number 6 becomes the next digit in our result. 
Result so far: 336.0
Deduct 120 from 138 and we're left with 18.
Append the next digit (6) from the dividend to 18 and continue with: 186 / 20

On to step 5:
The number 20 fits into 186 9 times, leaving a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 3369.0
Subtract 180 from 186 to get 6.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 20

Step 6:
60 divided by 20 is 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 33693.0
The remainder is 0 after subtracting 60 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 33693.0
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.

Advancing to step 8:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 33693.0
Subtracting 0 from 0 leaves us 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.

In conclusion, the division gives 33693.0 with a balance of 0.0.