We look at the division of 590672 by 73 
The aim is to understand the frequency of 73 in 590672.

On to step 1:
The number 73 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 73

On to step 2:
The number 73 fits into 59 0 times, leaving a remainder of 59.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 59 after subtracting 0 from 59.
Bring next digit (0) of the dividend behind the 59 and repeat the process: 590 / 73

Going ahead to step 3:
73 goes into 590 8 times with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 584 from 590 leaves us with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 73

Let's proceed to step 4:
66 divided by 73 is 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 80.0
If we subtract 0 from 66, we get 66.
Include the next digit (7) from the dividend after 66, then repeat: 667 / 73

Advancing to step 5:
The number 73 fits into 667 9 times, leaving a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 809.0
Subtracting 657 from 667 leaves us with 10.
Append the next digit (2) from the dividend to 10 and continue with: 102 / 73

Moving on to step 6:
73 goes into 102 1 times with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 8091.0
Subtracting 73 from 102 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 7:
If we divide 290 by 73, we get 3 and a remainder of 71.
The next digit of our result is 3. 
Result so far: 8091.3
Subtracting 219 from 290 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 8:
73 goes into 710 9 times with a remainder of 53.
Put 9 as the next digit of the answer. 
Result so far: 8091.39
If we subtract 657 from 710, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 9:
The number 73 fits into 530 7 times, leaving a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 8091.397
If we subtract 511 from 530, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 10:
73 can be fit into 190 2 times, resulting in a remainder of 44.
The next digit of our result is 2. 
Result so far: 8091.3972
Deduct 146 from 190 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 11:
440 divided by 73 is 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 8091.39726
The remainder is 2 after subtracting 438 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 12:
20 divided by 73 is 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 8091.39726
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 13:
If we divide 200 by 73, we get 2 and a remainder of 54.
Record the quotient 2 as the next digit in the result. 
Result so far: 8091.3972602
If we take 146 away from 200, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 14:
73 can be fit into 540 7 times, resulting in a remainder of 29.
Put 7 as the next digit of the answer. 
Result so far: 8091.39726027
Subtract 511 from 540 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

After the division, we end up with 8091.39726027 and a remainder of 2.9e-08.