87102 ÷ 79 
The aim is to understand the frequency of 79 in 87102.

Advancing to step 1:
The number 79 fits into 8 0 times, leaving 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.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 79

Moving on to step 2:
When dividing 87 by 79, we get 1 with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 79 from 87, we get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 79

Going ahead to step 3:
79 can be fit into 81 1 times, resulting in a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we take 79 away from 81, we end up with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 79

Let's proceed to step 4:
If we divide 20 by 79, we get 0 and a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 110.0
The remainder is 20 after subtracting 0 from 20.
Fetch the next digit (2) from the dividend, attach it to 20 and continue: 202 / 79

Advancing to step 5:
The number 79 fits into 202 2 times, leaving a remainder of 44.
The number 2 becomes the next digit in our result. 
Result so far: 1102.0
The remainder is 44 after subtracting 158 from 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 6:
If we divide 440 by 79, we get 5 and a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 1102.5
Subtracting 395 from 440 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 7:
79 can be fit into 450 5 times, resulting in a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 1102.55
Subtract 395 from 450 to 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.

The final outcome is 1102.55, with a leftover of 0.055.