We look at the division of 436728 by 73 
The aim is to understand the frequency of 73 in 436728.

On to step 1:
73 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 73

Step 2:
The number 73 fits into 43 0 times, leaving a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 43, we get 43.
Fetch the next digit (6) from the dividend, attach it to 43 and continue: 436 / 73

Step 3:
73 goes into 436 5 times with a remainder of 71.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 365 from 436 to get 71.
Grab the next digit (7) from the dividend, add it to 71, then carry on: 717 / 73

Moving on to step 4:
717 divided by 73 is 9 with a remainder of 60.
The next digit of our result is 9. 
Result so far: 59.0
If we take 657 away from 717, we end up with 60.
Append the next digit (2) from the dividend to 60 and continue with: 602 / 73

On to step 5:
73 can be fit into 602 8 times, resulting in a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 598.0
Subtract 584 from 602 to get 18.
Fetch the next digit (8) from the dividend, attach it to 18 and continue: 188 / 73

Moving on to step 6:
When dividing 188 by 73, we get 2 with a remainder of 42.
The next digit of our result is 2. 
Result so far: 5982.0
Deduct 146 from 188 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 7:
73 can be fit into 420 5 times, resulting in a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 5982.5
If we subtract 365 from 420, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 8:
The number 73 fits into 550 7 times, leaving a remainder of 39.
Use 7 as the next digit of our solution. 
Result so far: 5982.57
If we take 511 away from 550, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 9:
If we divide 390 by 73, we get 5 and a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 5982.575
The remainder is 25 after subtracting 365 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 10:
The number 73 fits into 250 3 times, leaving a remainder of 31.
Record the quotient 3 as the next digit in the result. 
Result so far: 5982.5753
Deduct 219 from 250 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 11:
310 divided by 73 is 4 with a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 5982.57534
Subtract 292 from 310 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 12:
73 can be fit into 180 2 times, resulting in a remainder of 34.
The number 2 becomes the next digit in our result. 
Result so far: 5982.575342
Subtract 146 from 180 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 13:
340 divided by 73 is 4 with a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 5982.5753424
If we take 292 away from 340, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 14:
If we divide 480 by 73, we get 6 and a remainder of 42.
Use 6 as the next digit of our solution. 
Result so far: 5982.57534246
Subtract 438 from 480 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final result is 5982.57534246 with a remainder of 4.2e-08.