We're dividing 51647625 by 1 
The aim is to understand the frequency of 1 in 51647625.

Advancing to step 1:
When dividing 5 by 1, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 0 after subtracting 5 from 5.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 1

Moving on to step 2:
1 divided by 1 is 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 51.0
The remainder is 0 after subtracting 1 from 1.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 1

Let's proceed to step 3:
The number 1 fits into 6 6 times, leaving a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 516.0
Subtracting 6 from 6 leaves us with 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 1

Advancing to step 4:
The number 1 fits into 4 4 times, leaving a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 5164.0
Subtracting 4 from 4 leaves us with 0.
Take the next digit (7) from the dividend and append it to 0, then repeat: 7 / 1

Advancing to step 5:
1 goes into 7 7 times with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 51647.0
The remainder is 0 after subtracting 7 from 7.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 1

Step 6:
1 goes into 6 6 times with a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 516476.0
Deduct 6 from 6 and we're left with 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 1

Let's proceed to step 7:
When dividing 2 by 1, we get 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 5164762.0
Deduct 2 from 2 and we're left with 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 1

Going ahead to step 8:
If we divide 5 by 1, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 51647625.0
The remainder is 0 after subtracting 5 from 5.
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 9:
1 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 51647625.0
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.

On to step 10:
1 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 51647625.0
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 51647625.0 with a remainder of 0.0.