80853 ÷ 73 
The aim is to understand the frequency of 73 in 80853.

Step 1:
If we divide 8 by 73, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 73

Let's proceed to step 2:
If we divide 80 by 73, we get 1 and a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 73 from 80 leaves us with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 73

Going ahead to step 3:
73 can be fit into 78 1 times, resulting in a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtracting 73 from 78 leaves us with 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 73

On to step 4:
73 can be fit into 55 0 times, resulting in a remainder of 55.
Put 0 as the next digit of the answer. 
Result so far: 110.0
Subtract 0 from 55 to get 55.
Bring next digit (3) of the dividend behind the 55 and repeat the process: 553 / 73

Moving on to step 5:
73 can be fit into 553 7 times, resulting in a remainder of 42.
Write down 7 as next digit of the result. 
Result so far: 1107.0
If we subtract 511 from 553, we 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.

On to step 6:
420 divided by 73 is 5 with a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 1107.5
Deduct 365 from 420 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 7:
73 can be fit into 550 7 times, resulting in a remainder of 39.
The number 7 becomes the next digit in our result. 
Result so far: 1107.57
Deduct 511 from 550 and we're left 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.

Advancing to step 8:
The number 73 fits into 390 5 times, leaving a remainder of 25.
The next digit of our result is 5. 
Result so far: 1107.575
Subtract 365 from 390 to get 25.
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 9:
73 goes into 250 3 times with a remainder of 31.
Use 3 as the next digit of our solution. 
Result so far: 1107.5753
Subtract 219 from 250 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 10:
When dividing 310 by 73, we get 4 with a remainder of 18.
Put 4 as the next digit of the answer. 
Result so far: 1107.57534
If we take 292 away from 310, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 11:
73 can be fit into 180 2 times, resulting in a remainder of 34.
Put 2 as the next digit of the answer. 
Result so far: 1107.575342
The remainder is 34 after subtracting 146 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 12:
340 divided by 73 is 4 with a remainder of 48.
Record the quotient 4 as the next digit in the result. 
Result so far: 1107.5753424
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 13:
When dividing 480 by 73, we get 6 with a remainder of 42.
Use 6 as the next digit of our solution. 
Result so far: 1107.57534246
If we take 438 away from 480, we end up 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.

The final result is 1107.57534246 with a remainder of 4.2e-08.