51299279 divided by 168 
The aim is to understand the frequency of 168 in 51299279.

On to step 1:
5 divided by 168 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 168

On to step 2:
168 goes into 51 0 times with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Fetch the next digit (2) from the dividend, attach it to 51 and continue: 512 / 168

Let's proceed to step 3:
When dividing 512 by 168, we get 3 with a remainder of 8.
The next digit of our result is 3. 
Result so far: 3.0
If we take 504 away from 512, we end up with 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 168

Let's proceed to step 4:
168 can be fit into 89 0 times, resulting in a remainder of 89.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
The remainder is 89 after subtracting 0 from 89.
Grab the next digit (9) from the dividend, add it to 89, then carry on: 899 / 168

Going ahead to step 5:
If we divide 899 by 168, we get 5 and a remainder of 59.
Put 5 as the next digit of the answer. 
Result so far: 305.0
Subtract 840 from 899 to get 59.
Include the next digit (2) from the dividend after 59, then repeat: 592 / 168

On to step 6:
When dividing 592 by 168, we get 3 with a remainder of 88.
The number 3 becomes the next digit in our result. 
Result so far: 3053.0
Subtracting 504 from 592 leaves us with 88.
Bring next digit (7) of the dividend behind the 88 and repeat the process: 887 / 168

Step 7:
168 can be fit into 887 5 times, resulting in a remainder of 47.
The next digit of our result is 5. 
Result so far: 30535.0
If we take 840 away from 887, we end up with 47.
Include the next digit (9) from the dividend after 47, then repeat: 479 / 168

Going ahead to step 8:
168 goes into 479 2 times with a remainder of 143.
Write down 2 as next digit of the result. 
Result so far: 305352.0
Subtract 336 from 479 to get 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Moving on to step 9:
When dividing 1430 by 168, we get 8 with a remainder of 86.
Use 8 as the next digit of our solution. 
Result so far: 305352.8
Subtracting 1344 from 1430 leaves us 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.

Going ahead to step 10:
860 divided by 168 is 5 with a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 305352.85
Subtract 840 from 860 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
200 divided by 168 is 1 with a remainder of 32.
The number 1 becomes the next digit in our result. 
Result so far: 305352.851
If we subtract 168 from 200, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 12:
When dividing 320 by 168, we get 1 with a remainder of 152.
The number 1 becomes the next digit in our result. 
Result so far: 305352.8511
Subtract 168 from 320 to get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

The final outcome is 305352.8511, with a leftover of 0.00152.