We look at the division of 397985 by 10 
The aim is to understand the frequency of 10 in 397985.

Going ahead to step 1:
When dividing 3 by 10, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 10

Let's proceed to step 2:
39 divided by 10 is 3 with a remainder of 9.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 30 from 39 to get 9.
Append the next digit (7) from the dividend to 9 and continue with: 97 / 10

Let's proceed to step 3:
10 goes into 97 9 times with a remainder of 7.
The next digit of our result is 9. 
Result so far: 39.0
If we subtract 90 from 97, we get 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 10

Moving on to step 4:
79 divided by 10 is 7 with a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 397.0
Subtract 70 from 79 to get 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 10

On to step 5:
10 can be fit into 98 9 times, resulting in a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 3979.0
Subtract 90 from 98 to get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 10

Going ahead to step 6:
When dividing 85 by 10, we get 8 with a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 39798.0
The remainder is 5 after subtracting 80 from 85.
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:
50 divided by 10 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 39798.5
Deduct 50 from 50 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:
10 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 39798.5
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.

Let's proceed to step 9:
If we divide 0 by 10, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 39798.5
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.

The quotient of the division is 39798.5, and the remainder is 0.0.