Let's divide 646956 by 1
The aim is to understand the frequency of 1 in 646956.

On to step 1:
1 can be fit into 6 6 times, resulting in a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtract 6 from 6 to get 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 1

On to step 2:
When dividing 4 by 1, we get 4 with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 64.0
If we take 4 away from 4, we end up with 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 1

Moving on to step 3:
The number 1 fits into 6 6 times, leaving a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 646.0
Subtract 6 from 6 to get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 1

Advancing to step 4:
The number 1 fits into 9 9 times, leaving a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 6469.0
If we take 9 away from 9, we end up with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 1

Going ahead to step 5:
When dividing 5 by 1, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 64695.0
Deduct 5 from 5 and we're left with 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 1

Let's proceed to step 6:
1 can be fit into 6 6 times, resulting in a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 646956.0
Deduct 6 from 6 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.

On to step 7:
1 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: 646956.0
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.

Moving on to step 8:
1 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 646956.0
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.

The quotient of the division is 646956.0, and the remainder is 0.0.