Let's divide 69851397 by 343
The aim is to understand the frequency of 343 in 69851397.

Advancing to step 1:
If we divide 6 by 343, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 343

On to step 2:
If we divide 69 by 343, we get 0 and a remainder of 69.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 69 leaves us with 69.
Grab the next digit (8) from the dividend, add it to 69, then carry on: 698 / 343

On to step 3:
698 divided by 343 is 2 with a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 686 from 698, we get 12.
Grab the next digit (5) from the dividend, add it to 12, then carry on: 125 / 343

Going ahead to step 4:
When dividing 125 by 343, we get 0 with a remainder of 125.
Write down 0 as next digit of the result. 
Result so far: 20.0
Deduct 0 from 125 and we're left with 125.
Bring next digit (1) of the dividend behind the 125 and repeat the process: 1251 / 343

Step 5:
343 goes into 1251 3 times with a remainder of 222.
Record the quotient 3 as the next digit in the result. 
Result so far: 203.0
The remainder is 222 after subtracting 1029 from 1251.
Append the next digit (3) from the dividend to 222 and continue with: 2223 / 343

Step 6:
The number 343 fits into 2223 6 times, leaving a remainder of 165.
The next digit of our result is 6. 
Result so far: 2036.0
Subtract 2058 from 2223 to get 165.
Fetch the next digit (9) from the dividend, attach it to 165 and continue: 1659 / 343

Step 7:
The number 343 fits into 1659 4 times, leaving a remainder of 287.
Record the quotient 4 as the next digit in the result. 
Result so far: 20364.0
Subtract 1372 from 1659 to get 287.
Grab the next digit (7) from the dividend, add it to 287, then carry on: 2877 / 343

Let's proceed to step 8:
If we divide 2877 by 343, we get 8 and a remainder of 133.
Put 8 as the next digit of the answer. 
Result so far: 203648.0
The remainder is 133 after subtracting 2744 from 2877.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Advancing to step 9:
When dividing 1330 by 343, we get 3 with a remainder of 301.
Record the quotient 3 as the next digit in the result. 
Result so far: 203648.3
Deduct 1029 from 1330 and we're left with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

Going ahead to step 10:
When dividing 3010 by 343, we get 8 with a remainder of 266.
Put 8 as the next digit of the answer. 
Result so far: 203648.38
Deduct 2744 from 3010 and we're left with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Advancing to step 11:
When dividing 2660 by 343, we get 7 with a remainder of 259.
Write down 7 as next digit of the result. 
Result so far: 203648.387
If we subtract 2401 from 2660, we get 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

On to step 12:
The number 343 fits into 2590 7 times, leaving a remainder of 189.
Write down 7 as next digit of the result. 
Result so far: 203648.3877
Subtract 2401 from 2590 to get 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

The quotient of the division is 203648.3877, and the remainder is 0.00189.