343899 divided by 73 
The aim is to understand the frequency of 73 in 343899.

Going ahead to step 1:
When dividing 3 by 73, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 73

Step 2:
73 can be fit into 34 0 times, resulting in a remainder of 34.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 34 and we're left with 34.
Append the next digit (3) from the dividend to 34 and continue with: 343 / 73

Going ahead to step 3:
If we divide 343 by 73, we get 4 and a remainder of 51.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 51 after subtracting 292 from 343.
Bring next digit (8) of the dividend behind the 51 and repeat the process: 518 / 73

Advancing to step 4:
518 divided by 73 is 7 with a remainder of 7.
The next digit of our result is 7. 
Result so far: 47.0
Subtracting 511 from 518 leaves us with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 73

Moving on to step 5:
73 can be fit into 79 1 times, resulting in a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 471.0
Deduct 73 from 79 and we're left with 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 73

Moving on to step 6:
73 can be fit into 69 0 times, resulting in a remainder of 69.
The number 0 becomes the next digit in our result. 
Result so far: 4710.0
Subtracting 0 from 69 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 7:
The number 73 fits into 690 9 times, leaving a remainder of 33.
The number 9 becomes the next digit in our result. 
Result so far: 4710.9
If we subtract 657 from 690, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 8:
If we divide 330 by 73, we get 4 and a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 4710.94
The remainder is 38 after subtracting 292 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 9:
73 goes into 380 5 times with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 4710.945
The remainder is 15 after subtracting 365 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 10:
150 divided by 73 is 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 4710.9452
Subtracting 146 from 150 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 11:
73 can be fit into 40 0 times, resulting in a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 4710.9452
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 12:
If we divide 400 by 73, we get 5 and a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 4710.945205
The remainder is 35 after subtracting 365 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 13:
350 divided by 73 is 4 with a remainder of 58.
Put 4 as the next digit of the answer. 
Result so far: 4710.9452054
The remainder is 58 after subtracting 292 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 14:
73 goes into 580 7 times with a remainder of 69.
Record the quotient 7 as the next digit in the result. 
Result so far: 4710.94520547
Subtracting 511 from 580 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Our division results in 4710.94520547 with a remaining 6.9e-08.