643387 divided by 92 
The aim is to understand the frequency of 92 in 643387.

Let's proceed to step 1:
If we divide 6 by 92, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 92

Let's proceed to step 2:
92 goes into 64 0 times with a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Append the next digit (3) from the dividend to 64 and continue with: 643 / 92

On to step 3:
92 can be fit into 643 6 times, resulting in a remainder of 91.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we take 552 away from 643, we end up with 91.
Fetch the next digit (3) from the dividend, attach it to 91 and continue: 913 / 92

Let's proceed to step 4:
913 divided by 92 is 9 with a remainder of 85.
The number 9 becomes the next digit in our result. 
Result so far: 69.0
Deduct 828 from 913 and we're left with 85.
Take the next digit (8) from the dividend and append it to 85, then repeat: 858 / 92

Going ahead to step 5:
The number 92 fits into 858 9 times, leaving a remainder of 30.
Put 9 as the next digit of the answer. 
Result so far: 699.0
Deduct 828 from 858 and we're left with 30.
Take the next digit (7) from the dividend and append it to 30, then repeat: 307 / 92

Let's proceed to step 6:
92 goes into 307 3 times with a remainder of 31.
Write down 3 as next digit of the result. 
Result so far: 6993.0
Deduct 276 from 307 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 7:
If we divide 310 by 92, we get 3 and a remainder of 34.
Record the quotient 3 as the next digit in the result. 
Result so far: 6993.3
If we subtract 276 from 310, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 8:
92 goes into 340 3 times with a remainder of 64.
Record the quotient 3 as the next digit in the result. 
Result so far: 6993.33
Deduct 276 from 340 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

After the division, we end up with 6993.33 and a remainder of 0.064.