Let's divide 51235988 by 343
The aim is to understand the frequency of 343 in 51235988.

Let's proceed to step 1:
If we divide 5 by 343, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 343

Moving on to step 2:
343 goes into 51 0 times with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Bring next digit (2) of the dividend behind the 51 and repeat the process: 512 / 343

On to step 3:
If we divide 512 by 343, we get 1 and a remainder of 169.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 343 from 512, we get 169.
Grab the next digit (3) from the dividend, add it to 169, then carry on: 1693 / 343

On to step 4:
If we divide 1693 by 343, we get 4 and a remainder of 321.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtracting 1372 from 1693 leaves us with 321.
Bring next digit (5) of the dividend behind the 321 and repeat the process: 3215 / 343

Step 5:
343 goes into 3215 9 times with a remainder of 128.
Use 9 as the next digit of our solution. 
Result so far: 149.0
The remainder is 128 after subtracting 3087 from 3215.
Include the next digit (9) from the dividend after 128, then repeat: 1289 / 343

Let's proceed to step 6:
343 can be fit into 1289 3 times, resulting in a remainder of 260.
Put 3 as the next digit of the answer. 
Result so far: 1493.0
If we subtract 1029 from 1289, we get 260.
Take the next digit (8) from the dividend and append it to 260, then repeat: 2608 / 343

Going ahead to step 7:
343 goes into 2608 7 times with a remainder of 207.
Write down 7 as next digit of the result. 
Result so far: 14937.0
If we subtract 2401 from 2608, we get 207.
Bring next digit (8) of the dividend behind the 207 and repeat the process: 2078 / 343

On to step 8:
343 goes into 2078 6 times with a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 149376.0
The remainder is 20 after subtracting 2058 from 2078.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
200 divided by 343 is 0 with a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 149376.0
If we take 0 away from 200, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 10:
2000 divided by 343 is 5 with a remainder of 285.
Record the quotient 5 as the next digit in the result. 
Result so far: 149376.05
If we subtract 1715 from 2000, we get 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Moving on to step 11:
2850 divided by 343 is 8 with a remainder of 106.
The next digit of our result is 8. 
Result so far: 149376.058
If we take 2744 away from 2850, we end up with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

On to step 12:
343 can be fit into 1060 3 times, resulting in a remainder of 31.
The next digit of our result is 3. 
Result so far: 149376.0583
The remainder is 31 after subtracting 1029 from 1060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 13:
The number 343 fits into 310 0 times, leaving a remainder of 310.
Use 0 as the next digit of our solution. 
Result so far: 149376.0583
Subtract 0 from 310 to get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Let's proceed to step 14:
343 goes into 3100 9 times with a remainder of 13.
The next digit of our result is 9. 
Result so far: 149376.058309
If we take 3087 away from 3100, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 15:
130 divided by 343 is 0 with a remainder of 130.
Put 0 as the next digit of the answer. 
Result so far: 149376.058309
The remainder is 130 after subtracting 0 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Step 16:
343 goes into 1300 3 times with a remainder of 271.
The number 3 becomes the next digit in our result. 
Result so far: 149376.05830903
Subtract 1029 from 1300 to get 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

The final result is 149376.05830903 with a remainder of 2.71e-07.