We look at the division of 65166398 by 249 
The aim is to understand the frequency of 249 in 65166398.

Moving on to step 1:
249 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 249

Step 2:
249 goes into 65 0 times with a remainder of 65.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 65 to get 65.
Take the next digit (1) from the dividend and append it to 65, then repeat: 651 / 249

On to step 3:
249 goes into 651 2 times with a remainder of 153.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 153 after subtracting 498 from 651.
Grab the next digit (6) from the dividend, add it to 153, then carry on: 1536 / 249

Let's proceed to step 4:
249 can be fit into 1536 6 times, resulting in a remainder of 42.
Write down 6 as next digit of the result. 
Result so far: 26.0
Subtract 1494 from 1536 to get 42.
Grab the next digit (6) from the dividend, add it to 42, then carry on: 426 / 249

Step 5:
249 can be fit into 426 1 times, resulting in a remainder of 177.
Put 1 as the next digit of the answer. 
Result so far: 261.0
If we subtract 249 from 426, we get 177.
Fetch the next digit (3) from the dividend, attach it to 177 and continue: 1773 / 249

Moving on to step 6:
If we divide 1773 by 249, we get 7 and a remainder of 30.
Use 7 as the next digit of our solution. 
Result so far: 2617.0
The remainder is 30 after subtracting 1743 from 1773.
Take the next digit (9) from the dividend and append it to 30, then repeat: 309 / 249

Let's proceed to step 7:
If we divide 309 by 249, we get 1 and a remainder of 60.
Put 1 as the next digit of the answer. 
Result so far: 26171.0
Subtracting 249 from 309 leaves us with 60.
Take the next digit (8) from the dividend and append it to 60, then repeat: 608 / 249

Going ahead to step 8:
When dividing 608 by 249, we get 2 with a remainder of 110.
Record the quotient 2 as the next digit in the result. 
Result so far: 261712.0
If we take 498 away from 608, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Let's proceed to step 9:
249 can be fit into 1100 4 times, resulting in a remainder of 104.
Use 4 as the next digit of our solution. 
Result so far: 261712.4
If we subtract 996 from 1100, we get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Let's proceed to step 10:
If we divide 1040 by 249, we get 4 and a remainder of 44.
Record the quotient 4 as the next digit in the result. 
Result so far: 261712.44
Subtracting 996 from 1040 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

After the division, we end up with 261712.44 and a remainder of 0.044.