391603 ÷ 10 
The aim is to understand the frequency of 10 in 391603.

Let's proceed to step 1:
10 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 10

On to step 2:
10 can be fit into 39 3 times, resulting in a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 9 after subtracting 30 from 39.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 10

Going ahead to step 3:
10 can be fit into 91 9 times, resulting in a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 39.0
Subtract 90 from 91 to get 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 10

Step 4:
When dividing 16 by 10, we get 1 with a remainder of 6.
The next digit of our result is 1. 
Result so far: 391.0
Subtract 10 from 16 to get 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 10

Advancing to step 5:
60 divided by 10 is 6 with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 3916.0
Subtract 60 from 60 to get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 10

Let's proceed to step 6:
10 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 39160.0
Deduct 0 from 3 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
If we divide 30 by 10, we get 3 and a remainder of 0.
The next digit of our result is 3. 
Result so far: 39160.3
Subtract 30 from 30 to 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.

Going ahead to step 8:
If we divide 0 by 10, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 39160.3
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.

Going ahead to step 9:
0 divided by 10 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 39160.3
The remainder is 0 after subtracting 0 from 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 outcome is 39160.3, with a leftover of 0.0.