We look at the division of 170396 by 73 
The aim is to understand the frequency of 73 in 170396.

Advancing to step 1:
The number 73 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 73

Moving on to step 2:
73 goes into 17 0 times with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 17 after subtracting 0 from 17.
Bring next digit (0) of the dividend behind the 17 and repeat the process: 170 / 73

Let's proceed to step 3:
73 can be fit into 170 2 times, resulting in a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 146 from 170 and we're left with 24.
Append the next digit (3) from the dividend to 24 and continue with: 243 / 73

On to step 4:
73 can be fit into 243 3 times, resulting in a remainder of 24.
Use 3 as the next digit of our solution. 
Result so far: 23.0
Subtracting 219 from 243 leaves us with 24.
Fetch the next digit (9) from the dividend, attach it to 24 and continue: 249 / 73

Let's proceed to step 5:
73 can be fit into 249 3 times, resulting in a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 233.0
Subtract 219 from 249 to get 30.
Bring next digit (6) of the dividend behind the 30 and repeat the process: 306 / 73

On to step 6:
73 can be fit into 306 4 times, resulting in a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 2334.0
Subtracting 292 from 306 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 7:
If we divide 140 by 73, we get 1 and a remainder of 67.
Record the quotient 1 as the next digit in the result. 
Result so far: 2334.1
Subtracting 73 from 140 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 8:
The number 73 fits into 670 9 times, leaving a remainder of 13.
The next digit of our result is 9. 
Result so far: 2334.19
Subtracting 657 from 670 leaves us 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.

Moving on to step 9:
When dividing 130 by 73, we get 1 with a remainder of 57.
Use 1 as the next digit of our solution. 
Result so far: 2334.191
If we subtract 73 from 130, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 10:
The number 73 fits into 570 7 times, leaving a remainder of 59.
The next digit of our result is 7. 
Result so far: 2334.1917
Deduct 511 from 570 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Step 11:
When dividing 590 by 73, we get 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 2334.19178
Deduct 584 from 590 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 12:
73 goes into 60 0 times with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 2334.19178
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 13:
600 divided by 73 is 8 with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 2334.1917808
Subtract 584 from 600 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 14:
73 can be fit into 160 2 times, resulting in a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 2334.19178082
If we take 146 away from 160, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

After the division, we end up with 2334.19178082 and a remainder of 1.4e-08.