We look at the division of 45999795 by 251 
The aim is to understand the frequency of 251 in 45999795.

Step 1:
4 divided by 251 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 251

Going ahead to step 2:
The number 251 fits into 45 0 times, leaving a remainder of 45.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 45, we get 45.
Take the next digit (9) from the dividend and append it to 45, then repeat: 459 / 251

Step 3:
When dividing 459 by 251, we get 1 with a remainder of 208.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 251 from 459 and we're left with 208.
Grab the next digit (9) from the dividend, add it to 208, then carry on: 2089 / 251

Moving on to step 4:
If we divide 2089 by 251, we get 8 and a remainder of 81.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Deduct 2008 from 2089 and we're left with 81.
Bring next digit (9) of the dividend behind the 81 and repeat the process: 819 / 251

Moving on to step 5:
251 can be fit into 819 3 times, resulting in a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 183.0
If we subtract 753 from 819, we get 66.
Include the next digit (7) from the dividend after 66, then repeat: 667 / 251

Advancing to step 6:
251 can be fit into 667 2 times, resulting in a remainder of 165.
Write down 2 as next digit of the result. 
Result so far: 1832.0
Subtracting 502 from 667 leaves us with 165.
Take the next digit (9) from the dividend and append it to 165, then repeat: 1659 / 251

Let's proceed to step 7:
251 goes into 1659 6 times with a remainder of 153.
Write down 6 as next digit of the result. 
Result so far: 18326.0
Subtracting 1506 from 1659 leaves us with 153.
Bring next digit (5) of the dividend behind the 153 and repeat the process: 1535 / 251

On to step 8:
1535 divided by 251 is 6 with a remainder of 29.
The number 6 becomes the next digit in our result. 
Result so far: 183266.0
If we take 1506 away from 1535, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 9:
290 divided by 251 is 1 with a remainder of 39.
The next digit of our result is 1. 
Result so far: 183266.1
If we subtract 251 from 290, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 10:
251 can be fit into 390 1 times, resulting in a remainder of 139.
Put 1 as the next digit of the answer. 
Result so far: 183266.11
Deduct 251 from 390 and we're left with 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

The final outcome is 183266.11, with a leftover of 0.139.