We look at the division of 386454 by 73 
The aim is to understand the frequency of 73 in 386454.

On to step 1:
73 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 73

On to step 2:
If we divide 38 by 73, we get 0 and a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 38 to get 38.
Take the next digit (6) from the dividend and append it to 38, then repeat: 386 / 73

On to step 3:
If we divide 386 by 73, we get 5 and a remainder of 21.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 365 from 386 and we're left with 21.
Bring next digit (4) of the dividend behind the 21 and repeat the process: 214 / 73

Going ahead to step 4:
If we divide 214 by 73, we get 2 and a remainder of 68.
The next digit of our result is 2. 
Result so far: 52.0
Subtract 146 from 214 to get 68.
Include the next digit (5) from the dividend after 68, then repeat: 685 / 73

On to step 5:
When dividing 685 by 73, we get 9 with a remainder of 28.
Use 9 as the next digit of our solution. 
Result so far: 529.0
If we take 657 away from 685, we end up with 28.
Take the next digit (4) from the dividend and append it to 28, then repeat: 284 / 73

Step 6:
284 divided by 73 is 3 with a remainder of 65.
Write down 3 as next digit of the result. 
Result so far: 5293.0
Deduct 219 from 284 and we're left 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.

Let's proceed to step 7:
73 can be fit into 650 8 times, resulting in a remainder of 66.
Put 8 as the next digit of the answer. 
Result so far: 5293.8
Subtract 584 from 650 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 8:
73 goes into 660 9 times with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 5293.89
If we take 657 away from 660, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 9:
If we divide 30 by 73, we get 0 and a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 5293.89
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 10:
300 divided by 73 is 4 with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 5293.8904
Deduct 292 from 300 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 11:
The number 73 fits into 80 1 times, leaving a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 5293.89041
If we take 73 away from 80, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 12:
The number 73 fits into 70 0 times, leaving a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 5293.89041
The remainder is 70 after subtracting 0 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 13:
The number 73 fits into 700 9 times, leaving a remainder of 43.
Record the quotient 9 as the next digit in the result. 
Result so far: 5293.8904109
If we take 657 away from 700, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 14:
The number 73 fits into 430 5 times, leaving a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 5293.89041095
If we take 365 away from 430, we end up 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.

The final result is 5293.89041095 with a remainder of 6.5e-08.