We look at the division of 25701661 by 497 
The aim is to understand the frequency of 497 in 25701661.

Going ahead to step 1:
2 divided by 497 is 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 497

Let's proceed to step 2:
When dividing 25 by 497, we get 0 with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 25 leaves us with 25.
Take the next digit (7) from the dividend and append it to 25, then repeat: 257 / 497

Step 3:
497 goes into 257 0 times with a remainder of 257.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 257 and we're left with 257.
Append the next digit (0) from the dividend to 257 and continue with: 2570 / 497

Step 4:
If we divide 2570 by 497, we get 5 and a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtracting 2485 from 2570 leaves us with 85.
Take the next digit (1) from the dividend and append it to 85, then repeat: 851 / 497

Let's proceed to step 5:
851 divided by 497 is 1 with a remainder of 354.
Use 1 as the next digit of our solution. 
Result so far: 51.0
The remainder is 354 after subtracting 497 from 851.
Append the next digit (6) from the dividend to 354 and continue with: 3546 / 497

On to step 6:
The number 497 fits into 3546 7 times, leaving a remainder of 67.
The number 7 becomes the next digit in our result. 
Result so far: 517.0
Deduct 3479 from 3546 and we're left with 67.
Include the next digit (6) from the dividend after 67, then repeat: 676 / 497

Let's proceed to step 7:
When dividing 676 by 497, we get 1 with a remainder of 179.
Put 1 as the next digit of the answer. 
Result so far: 5171.0
Subtract 497 from 676 to get 179.
Take the next digit (1) from the dividend and append it to 179, then repeat: 1791 / 497

Let's proceed to step 8:
The number 497 fits into 1791 3 times, leaving a remainder of 300.
The number 3 becomes the next digit in our result. 
Result so far: 51713.0
Subtracting 1491 from 1791 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 9:
If we divide 3000 by 497, we get 6 and a remainder of 18.
The number 6 becomes the next digit in our result. 
Result so far: 51713.6
Subtract 2982 from 3000 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 10:
180 divided by 497 is 0 with a remainder of 180.
Record the quotient 0 as the next digit in the result. 
Result so far: 51713.6
Subtract 0 from 180 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 11:
If we divide 1800 by 497, we get 3 and a remainder of 309.
Record the quotient 3 as the next digit in the result. 
Result so far: 51713.603
Subtracting 1491 from 1800 leaves us with 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

Advancing to step 12:
If we divide 3090 by 497, we get 6 and a remainder of 108.
Record the quotient 6 as the next digit in the result. 
Result so far: 51713.6036
The remainder is 108 after subtracting 2982 from 3090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Going ahead to step 13:
497 goes into 1080 2 times with a remainder of 86.
The next digit of our result is 2. 
Result so far: 51713.60362
Deduct 994 from 1080 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 14:
The number 497 fits into 860 1 times, leaving a remainder of 363.
Write down 1 as next digit of the result. 
Result so far: 51713.603621
The remainder is 363 after subtracting 497 from 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3630, and continue the process.

Step 15:
If we divide 3630 by 497, we get 7 and a remainder of 151.
Record the quotient 7 as the next digit in the result. 
Result so far: 51713.6036217
Subtract 3479 from 3630 to get 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Let's proceed to step 16:
The number 497 fits into 1510 3 times, leaving a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 51713.60362173
The remainder is 19 after subtracting 1491 from 1510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

In conclusion, the division gives 51713.60362173 with a balance of 1.9e-08.