We look at the division of 209288 by 73 
The aim is to understand the frequency of 73 in 209288.

Moving on to step 1:
The number 73 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 73

Going ahead to step 2:
If we divide 20 by 73, we get 0 and a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 20 and we're left with 20.
Include the next digit (9) from the dividend after 20, then repeat: 209 / 73

Moving on to step 3:
73 can be fit into 209 2 times, resulting in a remainder of 63.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 146 from 209 and we're left with 63.
Bring next digit (2) of the dividend behind the 63 and repeat the process: 632 / 73

On to step 4:
If we divide 632 by 73, we get 8 and a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
If we take 584 away from 632, we end up with 48.
Fetch the next digit (8) from the dividend, attach it to 48 and continue: 488 / 73

Step 5:
If we divide 488 by 73, we get 6 and a remainder of 50.
Record the quotient 6 as the next digit in the result. 
Result so far: 286.0
The remainder is 50 after subtracting 438 from 488.
Take the next digit (8) from the dividend and append it to 50, then repeat: 508 / 73

On to step 6:
73 can be fit into 508 6 times, resulting in a remainder of 70.
The number 6 becomes the next digit in our result. 
Result so far: 2866.0
If we subtract 438 from 508, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 7:
If we divide 700 by 73, we get 9 and a remainder of 43.
Put 9 as the next digit of the answer. 
Result so far: 2866.9
Subtract 657 from 700 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 8:
If we divide 430 by 73, we get 5 and a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 2866.95
If we subtract 365 from 430, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 9:
If we divide 650 by 73, we get 8 and a remainder of 66.
The next digit of our result is 8. 
Result so far: 2866.958
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.

Let's proceed to step 10:
The number 73 fits into 660 9 times, leaving a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 2866.9589
Subtract 657 from 660 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 11:
When dividing 30 by 73, we get 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 2866.9589
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 12:
73 can be fit into 300 4 times, resulting in a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 2866.958904
If we take 292 away from 300, we end up 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.

Let's proceed to step 13:
The number 73 fits into 80 1 times, leaving a remainder of 7.
The next digit of our result is 1. 
Result so far: 2866.9589041
If we subtract 73 from 80, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 14:
When dividing 70 by 73, we get 0 with a remainder of 70.
The next digit of our result is 0. 
Result so far: 2866.9589041
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The quotient of the division is 2866.9589041, and the remainder is 7e-08.