We look at the division of 86992 by 73 
The aim is to understand the frequency of 73 in 86992.

Going ahead to step 1:
8 divided by 73 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 73

Step 2:
The number 73 fits into 86 1 times, leaving a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 13 after subtracting 73 from 86.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 73

Going ahead to step 3:
When dividing 139 by 73, we get 1 with a remainder of 66.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtract 73 from 139 to get 66.
Grab the next digit (9) from the dividend, add it to 66, then carry on: 669 / 73

On to step 4:
73 goes into 669 9 times with a remainder of 12.
The next digit of our result is 9. 
Result so far: 119.0
Deduct 657 from 669 and we're left with 12.
Grab the next digit (2) from the dividend, add it to 12, then carry on: 122 / 73

Going ahead to step 5:
When dividing 122 by 73, we get 1 with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 1191.0
The remainder is 49 after subtracting 73 from 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 6:
490 divided by 73 is 6 with a remainder of 52.
The number 6 becomes the next digit in our result. 
Result so far: 1191.6
If we take 438 away from 490, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 7:
73 goes into 520 7 times with a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 1191.67
The remainder is 9 after subtracting 511 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 8:
73 goes into 90 1 times with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 1191.671
Subtract 73 from 90 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 9:
When dividing 170 by 73, we get 2 with a remainder of 24.
The next digit of our result is 2. 
Result so far: 1191.6712
If we subtract 146 from 170, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 10:
When dividing 240 by 73, we get 3 with a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 1191.67123
If we subtract 219 from 240, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 11:
73 can be fit into 210 2 times, resulting in a remainder of 64.
Write down 2 as next digit of the result. 
Result so far: 1191.671232
If we take 146 away from 210, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 12:
If we divide 640 by 73, we get 8 and a remainder of 56.
Record the quotient 8 as the next digit in the result. 
Result so far: 1191.6712328
The remainder is 56 after subtracting 584 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 13:
The number 73 fits into 560 7 times, leaving a remainder of 49.
Put 7 as the next digit of the answer. 
Result so far: 1191.67123287
Subtract 511 from 560 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

The final result is 1191.67123287 with a remainder of 4.9e-08.