We look at the division of 921789 by 1 
The aim is to understand the frequency of 1 in 921789.

Step 1:
1 can be fit into 9 9 times, resulting in a remainder of 0.
The next digit of our result is 9. 
Result so far: 9.0
If we take 9 away from 9, we end up with 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 1

Moving on to step 2:
1 can be fit into 2 2 times, resulting in a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 92.0
Deduct 2 from 2 and we're left with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 1

Moving on to step 3:
1 divided by 1 is 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 921.0
Subtracting 1 from 1 leaves us with 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 1

Going ahead to step 4:
The number 1 fits into 7 7 times, leaving a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 9217.0
Subtract 7 from 7 to get 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 1

Moving on to step 5:
1 goes into 8 8 times with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 92178.0
If we subtract 8 from 8, we get 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 1

Going ahead to step 6:
1 goes into 9 9 times with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 921789.0
Subtract 9 from 9 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.

Let's proceed to step 7:
1 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 921789.0
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.

Step 8:
0 divided by 1 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 921789.0
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 result is 921789.0 with a remainder of 0.0.