We're dividing 643662 by 93 
The aim is to understand the frequency of 93 in 643662.

On to step 1:
When dividing 6 by 93, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 93

Moving on to step 2:
The number 93 fits into 64 0 times, leaving a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Bring next digit (3) of the dividend behind the 64 and repeat the process: 643 / 93

Step 3:
If we divide 643 by 93, we get 6 and a remainder of 85.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 558 from 643 and we're left with 85.
Include the next digit (6) from the dividend after 85, then repeat: 856 / 93

Advancing to step 4:
The number 93 fits into 856 9 times, leaving a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 69.0
If we subtract 837 from 856, we get 19.
Take the next digit (6) from the dividend and append it to 19, then repeat: 196 / 93

Let's proceed to step 5:
When dividing 196 by 93, we get 2 with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 692.0
Deduct 186 from 196 and we're left with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 93

Moving on to step 6:
If we divide 102 by 93, we get 1 and a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 6921.0
Subtract 93 from 102 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
93 goes into 90 0 times with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 6921.0
If we subtract 0 from 90, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 8:
If we divide 900 by 93, we get 9 and a remainder of 63.
Write down 9 as next digit of the result. 
Result so far: 6921.09
If we take 837 away from 900, we end up with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

On to step 9:
93 can be fit into 630 6 times, resulting in a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 6921.096
If we subtract 558 from 630, we 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.

Advancing to step 10:
720 divided by 93 is 7 with a remainder of 69.
Record the quotient 7 as the next digit in the result. 
Result so far: 6921.0967
Deduct 651 from 720 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 11:
When dividing 690 by 93, we get 7 with a remainder of 39.
Use 7 as the next digit of our solution. 
Result so far: 6921.09677
Subtracting 651 from 690 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final result is 6921.09677 with a remainder of 3.9e-05.