We look at the division of 431509 by 93 
The aim is to understand the frequency of 93 in 431509.

On to step 1:
4 divided by 93 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 93

Let's proceed to step 2:
43 divided by 93 is 0 with a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Take the next digit (1) from the dividend and append it to 43, then repeat: 431 / 93

On to step 3:
When dividing 431 by 93, we get 4 with a remainder of 59.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 372 from 431 leaves us with 59.
Take the next digit (5) from the dividend and append it to 59, then repeat: 595 / 93

Let's proceed to step 4:
If we divide 595 by 93, we get 6 and a remainder of 37.
The number 6 becomes the next digit in our result. 
Result so far: 46.0
Subtract 558 from 595 to get 37.
Bring next digit (0) of the dividend behind the 37 and repeat the process: 370 / 93

Let's proceed to step 5:
93 goes into 370 3 times with a remainder of 91.
Record the quotient 3 as the next digit in the result. 
Result so far: 463.0
Subtracting 279 from 370 leaves us with 91.
Append the next digit (9) from the dividend to 91 and continue with: 919 / 93

Let's proceed to step 6:
919 divided by 93 is 9 with a remainder of 82.
Use 9 as the next digit of our solution. 
Result so far: 4639.0
Subtract 837 from 919 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 7:
93 can be fit into 820 8 times, resulting in a remainder of 76.
Record the quotient 8 as the next digit in the result. 
Result so far: 4639.8
Subtract 744 from 820 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 8:
If we divide 760 by 93, we get 8 and a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 4639.88
The remainder is 16 after subtracting 744 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

After the division, we end up with 4639.88 and a remainder of 0.016.