63866 divided by 1 
The aim is to understand the frequency of 1 in 63866.

Let's proceed to step 1:
6 divided by 1 is 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 6 from 6 and we're left with 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 1

Advancing to step 2:
When dividing 3 by 1, we get 3 with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 63.0
If we subtract 3 from 3, we get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 1

Moving on to step 3:
When dividing 8 by 1, we get 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 638.0
If we take 8 away from 8, we end up with 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 1

Step 4:
1 can be fit into 6 6 times, resulting in a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 6386.0
If we take 6 away from 6, we end up with 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 1

Going ahead to step 5:
1 can be fit into 6 6 times, resulting in a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 63866.0
The remainder is 0 after subtracting 6 from 6.
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 6:
1 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 63866.0
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.

Let's proceed to step 7:
If we divide 0 by 1, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 63866.0
Subtract 0 from 0 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.

The final result is 63866.0 with a remainder of 0.0.