We divide 391954 by 1
The aim is to understand the frequency of 1 in 391954.

Going ahead to step 1:
If we divide 3 by 1, we get 3 and a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 3 away from 3, we end up with 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 1

Moving on to step 2:
9 divided by 1 is 9 with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 39.0
Deduct 9 from 9 and we're left with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 1

Advancing to step 3:
1 goes into 1 1 times with a remainder of 0.
The next digit of our result is 1. 
Result so far: 391.0
Subtract 1 from 1 to get 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 1

Let's proceed to step 4:
9 divided by 1 is 9 with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 3919.0
Deduct 9 from 9 and we're left with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 1

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: 39195.0
If we subtract 5 from 5, we get 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 1

Step 6:
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: 391954.0
Subtracting 4 from 4 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.

Advancing to step 7:
The number 1 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 391954.0
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.

Step 8:
0 divided by 1 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 391954.0
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.

Our division results in 391954.0 with a remaining 0.0.