We look at the division of 60354453 by 251 
The aim is to understand the frequency of 251 in 60354453.

Advancing to step 1:
6 divided by 251 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 251

Step 2:
The number 251 fits into 60 0 times, leaving a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 60 to get 60.
Append the next digit (3) from the dividend to 60 and continue with: 603 / 251

Going ahead to step 3:
251 goes into 603 2 times with a remainder of 101.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 101 after subtracting 502 from 603.
Bring next digit (5) of the dividend behind the 101 and repeat the process: 1015 / 251

Going ahead to step 4:
If we divide 1015 by 251, we get 4 and a remainder of 11.
Put 4 as the next digit of the answer. 
Result so far: 24.0
The remainder is 11 after subtracting 1004 from 1015.
Bring next digit (4) of the dividend behind the 11 and repeat the process: 114 / 251

Advancing to step 5:
The number 251 fits into 114 0 times, leaving a remainder of 114.
Use 0 as the next digit of our solution. 
Result so far: 240.0
Subtract 0 from 114 to get 114.
Append the next digit (4) from the dividend to 114 and continue with: 1144 / 251

Step 6:
The number 251 fits into 1144 4 times, leaving a remainder of 140.
The number 4 becomes the next digit in our result. 
Result so far: 2404.0
Deduct 1004 from 1144 and we're left with 140.
Grab the next digit (5) from the dividend, add it to 140, then carry on: 1405 / 251

Moving on to step 7:
251 goes into 1405 5 times with a remainder of 150.
Write down 5 as next digit of the result. 
Result so far: 24045.0
If we subtract 1255 from 1405, we get 150.
Take the next digit (3) from the dividend and append it to 150, then repeat: 1503 / 251

On to step 8:
The number 251 fits into 1503 5 times, leaving a remainder of 248.
Put 5 as the next digit of the answer. 
Result so far: 240455.0
If we take 1255 away from 1503, we end up with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Step 9:
2480 divided by 251 is 9 with a remainder of 221.
Write down 9 as next digit of the result. 
Result so far: 240455.9
The remainder is 221 after subtracting 2259 from 2480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Let's proceed to step 10:
The number 251 fits into 2210 8 times, leaving a remainder of 202.
Record the quotient 8 as the next digit in the result. 
Result so far: 240455.98
If we subtract 2008 from 2210, we get 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Moving on to step 11:
When dividing 2020 by 251, we get 8 with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 240455.988
Deduct 2008 from 2020 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 240455.988 with a remainder of 0.0012.