We're dividing 75170872 by 168 
The aim is to understand the frequency of 168 in 75170872.

Going ahead to step 1:
168 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 168

Moving on to step 2:
When dividing 75 by 168, we get 0 with a remainder of 75.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 75, we end up with 75.
Include the next digit (1) from the dividend after 75, then repeat: 751 / 168

Let's proceed to step 3:
When dividing 751 by 168, we get 4 with a remainder of 79.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 672 from 751 and we're left with 79.
Take the next digit (7) from the dividend and append it to 79, then repeat: 797 / 168

Let's proceed to step 4:
797 divided by 168 is 4 with a remainder of 125.
The next digit of our result is 4. 
Result so far: 44.0
Subtracting 672 from 797 leaves us with 125.
Fetch the next digit (0) from the dividend, attach it to 125 and continue: 1250 / 168

Advancing to step 5:
1250 divided by 168 is 7 with a remainder of 74.
Write down 7 as next digit of the result. 
Result so far: 447.0
Subtract 1176 from 1250 to get 74.
Fetch the next digit (8) from the dividend, attach it to 74 and continue: 748 / 168

Moving on to step 6:
When dividing 748 by 168, we get 4 with a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 4474.0
The remainder is 76 after subtracting 672 from 748.
Take the next digit (7) from the dividend and append it to 76, then repeat: 767 / 168

Advancing to step 7:
If we divide 767 by 168, we get 4 and a remainder of 95.
Use 4 as the next digit of our solution. 
Result so far: 44744.0
Deduct 672 from 767 and we're left with 95.
Include the next digit (2) from the dividend after 95, then repeat: 952 / 168

Step 8:
952 divided by 168 is 5 with a remainder of 112.
Record the quotient 5 as the next digit in the result. 
Result so far: 447445.0
Subtracting 840 from 952 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 9:
If we divide 1120 by 168, we get 6 and a remainder of 112.
Use 6 as the next digit of our solution. 
Result so far: 447445.6
If we subtract 1008 from 1120, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Step 10:
If we divide 1120 by 168, we get 6 and a remainder of 112.
Record the quotient 6 as the next digit in the result. 
Result so far: 447445.66
Deduct 1008 from 1120 and we're left with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

The quotient of the division is 447445.66, and the remainder is 0.112.