We look at the division of 12261408 by 343 
The aim is to understand the frequency of 343 in 12261408.

Moving on to step 1:
343 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 343

Going ahead to step 2:
12 divided by 343 is 0 with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Grab the next digit (2) from the dividend, add it to 12, then carry on: 122 / 343

Step 3:
343 can be fit into 122 0 times, resulting in a remainder of 122.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 122 after subtracting 0 from 122.
Bring next digit (6) of the dividend behind the 122 and repeat the process: 1226 / 343

On to step 4:
343 goes into 1226 3 times with a remainder of 197.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 197 after subtracting 1029 from 1226.
Include the next digit (1) from the dividend after 197, then repeat: 1971 / 343

Advancing to step 5:
The number 343 fits into 1971 5 times, leaving a remainder of 256.
Put 5 as the next digit of the answer. 
Result so far: 35.0
The remainder is 256 after subtracting 1715 from 1971.
Fetch the next digit (4) from the dividend, attach it to 256 and continue: 2564 / 343

Step 6:
If we divide 2564 by 343, we get 7 and a remainder of 163.
Record the quotient 7 as the next digit in the result. 
Result so far: 357.0
Deduct 2401 from 2564 and we're left with 163.
Include the next digit (0) from the dividend after 163, then repeat: 1630 / 343

Let's proceed to step 7:
343 goes into 1630 4 times with a remainder of 258.
Record the quotient 4 as the next digit in the result. 
Result so far: 3574.0
Deduct 1372 from 1630 and we're left with 258.
Bring next digit (8) of the dividend behind the 258 and repeat the process: 2588 / 343

Going ahead to step 8:
2588 divided by 343 is 7 with a remainder of 187.
Put 7 as the next digit of the answer. 
Result so far: 35747.0
Subtract 2401 from 2588 to get 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Advancing to step 9:
If we divide 1870 by 343, we get 5 and a remainder of 155.
The next digit of our result is 5. 
Result so far: 35747.5
Deduct 1715 from 1870 and we're left with 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

On to step 10:
1550 divided by 343 is 4 with a remainder of 178.
The next digit of our result is 4. 
Result so far: 35747.54
Subtract 1372 from 1550 to get 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Step 11:
343 can be fit into 1780 5 times, resulting in a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 35747.545
Subtracting 1715 from 1780 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 12:
343 can be fit into 650 1 times, resulting in a remainder of 307.
Write down 1 as next digit of the result. 
Result so far: 35747.5451
If we subtract 343 from 650, we get 307.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3070, and continue the process.

Going ahead to step 13:
The number 343 fits into 3070 8 times, leaving a remainder of 326.
Use 8 as the next digit of our solution. 
Result so far: 35747.54518
Deduct 2744 from 3070 and we're left with 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Advancing to step 14:
If we divide 3260 by 343, we get 9 and a remainder of 173.
Use 9 as the next digit of our solution. 
Result so far: 35747.545189
Deduct 3087 from 3260 and we're left with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Moving on to step 15:
343 goes into 1730 5 times with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 35747.5451895
Subtract 1715 from 1730 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 16:
343 goes into 150 0 times with a remainder of 150.
Use 0 as the next digit of our solution. 
Result so far: 35747.5451895
If we take 0 away from 150, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

In conclusion, the division gives 35747.5451895 with a balance of 1.5e-07.