We're dividing 669404 by 1 
The aim is to understand the frequency of 1 in 669404.

On to step 1:
1 goes into 6 6 times with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 6 from 6 and we're left with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 1

On to step 2:
When dividing 6 by 1, we get 6 with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 66.0
Deduct 6 from 6 and we're left with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 1

Going ahead to step 3:
1 goes into 9 9 times with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 669.0
Subtract 9 from 9 to get 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 1

On to step 4:
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: 6694.0
The remainder is 0 after subtracting 4 from 4.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 1

Step 5:
When dividing 0 by 1, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 66940.0
If we take 0 away from 0, we end up with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 1

Going ahead to step 6:
1 goes into 4 4 times with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 669404.0
Subtract 4 from 4 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.

On to step 7:
When dividing 0 by 1, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 669404.0
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.

Advancing to step 8:
If we divide 0 by 1, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 669404.0
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.

The final outcome is 669404.0, with a leftover of 0.0.