We look at the division of 25440654 by 909 
The aim is to understand the frequency of 909 in 25440654.

Step 1:
When dividing 2 by 909, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 909

Let's proceed to step 2:
The number 909 fits into 25 0 times, leaving a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Include the next digit (4) from the dividend after 25, then repeat: 254 / 909

Let's proceed to step 3:
When dividing 254 by 909, we get 0 with a remainder of 254.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 254 and we're left with 254.
Fetch the next digit (4) from the dividend, attach it to 254 and continue: 2544 / 909

Step 4:
If we divide 2544 by 909, we get 2 and a remainder of 726.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 1818 away from 2544, we end up with 726.
Fetch the next digit (0) from the dividend, attach it to 726 and continue: 7260 / 909

Moving on to step 5:
The number 909 fits into 7260 7 times, leaving a remainder of 897.
Use 7 as the next digit of our solution. 
Result so far: 27.0
Deduct 6363 from 7260 and we're left with 897.
Take the next digit (6) from the dividend and append it to 897, then repeat: 8976 / 909

On to step 6:
If we divide 8976 by 909, we get 9 and a remainder of 795.
Put 9 as the next digit of the answer. 
Result so far: 279.0
Subtracting 8181 from 8976 leaves us with 795.
Bring next digit (5) of the dividend behind the 795 and repeat the process: 7955 / 909

Advancing to step 7:
909 can be fit into 7955 8 times, resulting in a remainder of 683.
Record the quotient 8 as the next digit in the result. 
Result so far: 2798.0
Subtracting 7272 from 7955 leaves us with 683.
Include the next digit (4) from the dividend after 683, then repeat: 6834 / 909

Step 8:
If we divide 6834 by 909, we get 7 and a remainder of 471.
Write down 7 as next digit of the result. 
Result so far: 27987.0
Subtract 6363 from 6834 to get 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

Step 9:
909 goes into 4710 5 times with a remainder of 165.
Put 5 as the next digit of the answer. 
Result so far: 27987.5
If we take 4545 away from 4710, we end up with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Going ahead to step 10:
909 goes into 1650 1 times with a remainder of 741.
Use 1 as the next digit of our solution. 
Result so far: 27987.51
The remainder is 741 after subtracting 909 from 1650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7410, and continue the process.

Step 11:
909 goes into 7410 8 times with a remainder of 138.
The next digit of our result is 8. 
Result so far: 27987.518
The remainder is 138 after subtracting 7272 from 7410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Let's proceed to step 12:
When dividing 1380 by 909, we get 1 with a remainder of 471.
The number 1 becomes the next digit in our result. 
Result so far: 27987.5181
Subtract 909 from 1380 to get 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

On to step 13:
The number 909 fits into 4710 5 times, leaving a remainder of 165.
The next digit of our result is 5. 
Result so far: 27987.51815
Subtract 4545 from 4710 to get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

On to step 14:
If we divide 1650 by 909, we get 1 and a remainder of 741.
Write down 1 as next digit of the result. 
Result so far: 27987.518151
If we take 909 away from 1650, we end up with 741.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7410, and continue the process.

Moving on to step 15:
7410 divided by 909 is 8 with a remainder of 138.
Write down 8 as next digit of the result. 
Result so far: 27987.5181518
If we take 7272 away from 7410, we end up with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Going ahead to step 16:
When dividing 1380 by 909, we get 1 with a remainder of 471.
Use 1 as the next digit of our solution. 
Result so far: 27987.51815181
Subtract 909 from 1380 to get 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

The quotient of the division is 27987.51815181, and the remainder is 4.71e-07.