We look at the division of 51891432 by 249 
The aim is to understand the frequency of 249 in 51891432.

Going ahead to step 1:
5 divided by 249 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 249

Let's proceed to step 2:
The number 249 fits into 51 0 times, leaving a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Grab the next digit (8) from the dividend, add it to 51, then carry on: 518 / 249

Going ahead to step 3:
The number 249 fits into 518 2 times, leaving a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 498 from 518, we get 20.
Grab the next digit (9) from the dividend, add it to 20, then carry on: 209 / 249

Moving on to step 4:
249 can be fit into 209 0 times, resulting in a remainder of 209.
Put 0 as the next digit of the answer. 
Result so far: 20.0
The remainder is 209 after subtracting 0 from 209.
Include the next digit (1) from the dividend after 209, then repeat: 2091 / 249

Going ahead to step 5:
2091 divided by 249 is 8 with a remainder of 99.
Write down 8 as next digit of the result. 
Result so far: 208.0
If we subtract 1992 from 2091, we get 99.
Bring next digit (4) of the dividend behind the 99 and repeat the process: 994 / 249

Step 6:
994 divided by 249 is 3 with a remainder of 247.
The next digit of our result is 3. 
Result so far: 2083.0
Subtract 747 from 994 to get 247.
Fetch the next digit (3) from the dividend, attach it to 247 and continue: 2473 / 249

Advancing to step 7:
249 goes into 2473 9 times with a remainder of 232.
Use 9 as the next digit of our solution. 
Result so far: 20839.0
If we take 2241 away from 2473, we end up with 232.
Grab the next digit (2) from the dividend, add it to 232, then carry on: 2322 / 249

Advancing to step 8:
If we divide 2322 by 249, we get 9 and a remainder of 81.
The number 9 becomes the next digit in our result. 
Result so far: 208399.0
If we take 2241 away from 2322, we end up with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Let's proceed to step 9:
249 goes into 810 3 times with a remainder of 63.
The number 3 becomes the next digit in our result. 
Result so far: 208399.3
The remainder is 63 after subtracting 747 from 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 10:
If we divide 630 by 249, we get 2 and a remainder of 132.
Use 2 as the next digit of our solution. 
Result so far: 208399.32
If we subtract 498 from 630, we get 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

On to step 11:
If we divide 1320 by 249, we get 5 and a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 208399.325
The remainder is 75 after subtracting 1245 from 1320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 12:
When dividing 750 by 249, we get 3 with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 208399.3253
If we subtract 747 from 750, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 13:
249 can be fit into 30 0 times, resulting in a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 208399.3253
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 14:
249 can be fit into 300 1 times, resulting in a remainder of 51.
Write down 1 as next digit of the result. 
Result so far: 208399.325301
Subtract 249 from 300 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 15:
249 goes into 510 2 times with a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 208399.3253012
Subtract 498 from 510 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 16:
The number 249 fits into 120 0 times, leaving a remainder of 120.
The number 0 becomes the next digit in our result. 
Result so far: 208399.3253012
Subtracting 0 from 120 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

The quotient of the division is 208399.3253012, and the remainder is 1.2e-07.