We look at the division of 157212 by 80 
The aim is to understand the frequency of 80 in 157212.

Let's proceed to step 1:
If we divide 1 by 80, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 80

Advancing to step 2:
If we divide 15 by 80, we get 0 and a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Take the next digit (7) from the dividend and append it to 15, then repeat: 157 / 80

Advancing to step 3:
80 can be fit into 157 1 times, resulting in a remainder of 77.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 77 after subtracting 80 from 157.
Include the next digit (2) from the dividend after 77, then repeat: 772 / 80

Advancing to step 4:
When dividing 772 by 80, we get 9 with a remainder of 52.
The next digit of our result is 9. 
Result so far: 19.0
If we subtract 720 from 772, we get 52.
Fetch the next digit (1) from the dividend, attach it to 52 and continue: 521 / 80

Moving on to step 5:
The number 80 fits into 521 6 times, leaving a remainder of 41.
Record the quotient 6 as the next digit in the result. 
Result so far: 196.0
The remainder is 41 after subtracting 480 from 521.
Grab the next digit (2) from the dividend, add it to 41, then carry on: 412 / 80

On to step 6:
The number 80 fits into 412 5 times, leaving a remainder of 12.
The next digit of our result is 5. 
Result so far: 1965.0
If we subtract 400 from 412, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 7:
120 divided by 80 is 1 with a remainder of 40.
The number 1 becomes the next digit in our result. 
Result so far: 1965.1
Subtract 80 from 120 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 8:
The number 80 fits into 400 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 1965.15
Subtracting 400 from 400 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
When dividing 0 by 80, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 1965.15
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
The number 80 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 1965.15
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 1965.15 with a remainder of 0.0.