85128197 divided by 343 
The aim is to understand the frequency of 343 in 85128197.

On to step 1:
8 divided by 343 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 343

Advancing to step 2:
The number 343 fits into 85 0 times, leaving a remainder of 85.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 85 leaves us with 85.
Include the next digit (1) from the dividend after 85, then repeat: 851 / 343

Going ahead to step 3:
The number 343 fits into 851 2 times, leaving a remainder of 165.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 165 after subtracting 686 from 851.
Grab the next digit (2) from the dividend, add it to 165, then carry on: 1652 / 343

On to step 4:
When dividing 1652 by 343, we get 4 with a remainder of 280.
Write down 4 as next digit of the result. 
Result so far: 24.0
Deduct 1372 from 1652 and we're left with 280.
Append the next digit (8) from the dividend to 280 and continue with: 2808 / 343

Moving on to step 5:
2808 divided by 343 is 8 with a remainder of 64.
Use 8 as the next digit of our solution. 
Result so far: 248.0
If we subtract 2744 from 2808, we get 64.
Append the next digit (1) from the dividend to 64 and continue with: 641 / 343

Advancing to step 6:
When dividing 641 by 343, we get 1 with a remainder of 298.
The next digit of our result is 1. 
Result so far: 2481.0
Subtracting 343 from 641 leaves us with 298.
Fetch the next digit (9) from the dividend, attach it to 298 and continue: 2989 / 343

Moving on to step 7:
343 can be fit into 2989 8 times, resulting in a remainder of 245.
Record the quotient 8 as the next digit in the result. 
Result so far: 24818.0
If we subtract 2744 from 2989, we get 245.
Append the next digit (7) from the dividend to 245 and continue with: 2457 / 343

Let's proceed to step 8:
343 can be fit into 2457 7 times, resulting in a remainder of 56.
The next digit of our result is 7. 
Result so far: 248187.0
If we take 2401 away from 2457, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 9:
If we divide 560 by 343, we get 1 and a remainder of 217.
Put 1 as the next digit of the answer. 
Result so far: 248187.1
Subtract 343 from 560 to get 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Moving on to step 10:
343 goes into 2170 6 times with a remainder of 112.
Write down 6 as next digit of the result. 
Result so far: 248187.16
Deduct 2058 from 2170 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.

On to step 11:
1120 divided by 343 is 3 with a remainder of 91.
Write down 3 as next digit of the result. 
Result so far: 248187.163
Deduct 1029 from 1120 and we're left with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Moving on to step 12:
When dividing 910 by 343, we get 2 with a remainder of 224.
The next digit of our result is 2. 
Result so far: 248187.1632
If we take 686 away from 910, we end up with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Step 13:
The number 343 fits into 2240 6 times, leaving a remainder of 182.
Write down 6 as next digit of the result. 
Result so far: 248187.16326
If we subtract 2058 from 2240, we get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Advancing to step 14:
If we divide 1820 by 343, we get 5 and a remainder of 105.
Use 5 as the next digit of our solution. 
Result so far: 248187.163265
Deduct 1715 from 1820 and we're left with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

On to step 15:
When dividing 1050 by 343, we get 3 with a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 248187.1632653
If we subtract 1029 from 1050, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 16:
If we divide 210 by 343, we get 0 and a remainder of 210.
Write down 0 as next digit of the result. 
Result so far: 248187.1632653
The remainder is 210 after subtracting 0 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

The final outcome is 248187.1632653, with a leftover of 2.1e-07.