We look at the division of 25904124 by 168 
The aim is to understand the frequency of 168 in 25904124.

Step 1:
If we divide 2 by 168, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 168

Moving on to step 2:
168 can be fit into 25 0 times, resulting in a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Bring next digit (9) of the dividend behind the 25 and repeat the process: 259 / 168

Let's proceed to step 3:
168 goes into 259 1 times with a remainder of 91.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 168 from 259, we get 91.
Include the next digit (0) from the dividend after 91, then repeat: 910 / 168

Moving on to step 4:
168 goes into 910 5 times with a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
The remainder is 70 after subtracting 840 from 910.
Bring next digit (4) of the dividend behind the 70 and repeat the process: 704 / 168

Let's proceed to step 5:
704 divided by 168 is 4 with a remainder of 32.
Use 4 as the next digit of our solution. 
Result so far: 154.0
Deduct 672 from 704 and we're left with 32.
Include the next digit (1) from the dividend after 32, then repeat: 321 / 168

Advancing to step 6:
When dividing 321 by 168, we get 1 with a remainder of 153.
Record the quotient 1 as the next digit in the result. 
Result so far: 1541.0
The remainder is 153 after subtracting 168 from 321.
Fetch the next digit (2) from the dividend, attach it to 153 and continue: 1532 / 168

Moving on to step 7:
168 can be fit into 1532 9 times, resulting in a remainder of 20.
Use 9 as the next digit of our solution. 
Result so far: 15419.0
Subtract 1512 from 1532 to get 20.
Grab the next digit (4) from the dividend, add it to 20, then carry on: 204 / 168

Advancing to step 8:
If we divide 204 by 168, we get 1 and a remainder of 36.
Use 1 as the next digit of our solution. 
Result so far: 154191.0
The remainder is 36 after subtracting 168 from 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 9:
360 divided by 168 is 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 154191.2
If we subtract 336 from 360, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 10:
168 goes into 240 1 times with a remainder of 72.
Use 1 as the next digit of our solution. 
Result so far: 154191.21
Subtract 168 from 240 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 11:
168 can be fit into 720 4 times, resulting in a remainder of 48.
The number 4 becomes the next digit in our result. 
Result so far: 154191.214
Subtracting 672 from 720 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 12:
If we divide 480 by 168, we get 2 and a remainder of 144.
Use 2 as the next digit of our solution. 
Result so far: 154191.2142
If we subtract 336 from 480, we get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Going ahead to step 13:
1440 divided by 168 is 8 with a remainder of 96.
Use 8 as the next digit of our solution. 
Result so far: 154191.21428
If we take 1344 away from 1440, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 14:
960 divided by 168 is 5 with a remainder of 120.
The next digit of our result is 5. 
Result so far: 154191.214285
Subtract 840 from 960 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 15:
When dividing 1200 by 168, we get 7 with a remainder of 24.
Record the quotient 7 as the next digit in the result. 
Result so far: 154191.2142857
The remainder is 24 after subtracting 1176 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 16:
168 goes into 240 1 times with a remainder of 72.
The number 1 becomes the next digit in our result. 
Result so far: 154191.21428571
Subtract 168 from 240 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Our division results in 154191.21428571 with a remaining 7.2e-08.