Let's divide 72045371 by 343
The aim is to understand the frequency of 343 in 72045371.

Step 1:
7 divided by 343 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 343

Let's proceed to step 2:
If we divide 72 by 343, we get 0 and a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Take the next digit (0) from the dividend and append it to 72, then repeat: 720 / 343

On to step 3:
343 can be fit into 720 2 times, resulting in a remainder of 34.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 686 away from 720, we end up with 34.
Bring next digit (4) of the dividend behind the 34 and repeat the process: 344 / 343

Going ahead to step 4:
When dividing 344 by 343, we get 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 21.0
Deduct 343 from 344 and we're left with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 343

Advancing to step 5:
When dividing 15 by 343, we get 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 210.0
The remainder is 15 after subtracting 0 from 15.
Append the next digit (3) from the dividend to 15 and continue with: 153 / 343

On to step 6:
If we divide 153 by 343, we get 0 and a remainder of 153.
Put 0 as the next digit of the answer. 
Result so far: 2100.0
If we take 0 away from 153, we end up with 153.
Take the next digit (7) from the dividend and append it to 153, then repeat: 1537 / 343

Advancing to step 7:
If we divide 1537 by 343, we get 4 and a remainder of 165.
Use 4 as the next digit of our solution. 
Result so far: 21004.0
Deduct 1372 from 1537 and we're left with 165.
Grab the next digit (1) from the dividend, add it to 165, then carry on: 1651 / 343

On to step 8:
1651 divided by 343 is 4 with a remainder of 279.
Use 4 as the next digit of our solution. 
Result so far: 210044.0
Subtract 1372 from 1651 to get 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Moving on to step 9:
When dividing 2790 by 343, we get 8 with a remainder of 46.
The next digit of our result is 8. 
Result so far: 210044.8
If we subtract 2744 from 2790, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 10:
The number 343 fits into 460 1 times, leaving a remainder of 117.
The number 1 becomes the next digit in our result. 
Result so far: 210044.81
The remainder is 117 after subtracting 343 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Advancing to step 11:
1170 divided by 343 is 3 with a remainder of 141.
Use 3 as the next digit of our solution. 
Result so far: 210044.813
Subtracting 1029 from 1170 leaves us with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Let's proceed to step 12:
When dividing 1410 by 343, we get 4 with a remainder of 38.
Record the quotient 4 as the next digit in the result. 
Result so far: 210044.8134
If we take 1372 away from 1410, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 13:
343 goes into 380 1 times with a remainder of 37.
Record the quotient 1 as the next digit in the result. 
Result so far: 210044.81341
The remainder is 37 after subtracting 343 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 14:
343 can be fit into 370 1 times, resulting in a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 210044.813411
Subtract 343 from 370 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

After the division, we end up with 210044.813411 and a remainder of 2.7e-06.