Let's divide 491220 by 1
The aim is to understand the frequency of 1 in 491220.

Let's proceed to step 1:
The number 1 fits into 4 4 times, leaving a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 4 from 4 leaves us with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 1

Moving on to step 2:
1 can be fit into 9 9 times, resulting in a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 49.0
Subtracting 9 from 9 leaves us with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 1

On to step 3:
When dividing 1 by 1, we get 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 491.0
Subtracting 1 from 1 leaves us with 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 1

Step 4:
If we divide 2 by 1, we get 2 and a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 4912.0
Subtract 2 from 2 to get 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 1

Let's proceed to step 5:
1 can be fit into 2 2 times, resulting in a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 49122.0
The remainder is 0 after subtracting 2 from 2.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 1

Going ahead to step 6:
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: 491220.0
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.

Let's proceed to step 7:
1 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 491220.0
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.

Let's proceed to step 8:
The number 1 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 491220.0
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.

The final outcome is 491220.0, with a leftover of 0.0.