878688 ÷ 89 
The aim is to understand the frequency of 89 in 878688.

Moving on to step 1:
89 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 89

Moving on to step 2:
When dividing 87 by 89, we get 0 with a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Grab the next digit (8) from the dividend, add it to 87, then carry on: 878 / 89

Going ahead to step 3:
89 can be fit into 878 9 times, resulting in a remainder of 77.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 801 from 878, we get 77.
Take the next digit (6) from the dividend and append it to 77, then repeat: 776 / 89

Step 4:
89 can be fit into 776 8 times, resulting in a remainder of 64.
Write down 8 as next digit of the result. 
Result so far: 98.0
Subtract 712 from 776 to get 64.
Append the next digit (8) from the dividend to 64 and continue with: 648 / 89

Advancing to step 5:
89 can be fit into 648 7 times, resulting in a remainder of 25.
Record the quotient 7 as the next digit in the result. 
Result so far: 987.0
If we take 623 away from 648, we end up with 25.
Bring next digit (8) of the dividend behind the 25 and repeat the process: 258 / 89

Let's proceed to step 6:
89 goes into 258 2 times with a remainder of 80.
Put 2 as the next digit of the answer. 
Result so far: 9872.0
If we subtract 178 from 258, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 7:
When dividing 800 by 89, we get 8 with a remainder of 88.
The number 8 becomes the next digit in our result. 
Result so far: 9872.8
If we subtract 712 from 800, we get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Moving on to step 8:
89 goes into 880 9 times with a remainder of 79.
Write down 9 as next digit of the result. 
Result so far: 9872.89
If we subtract 801 from 880, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 9:
790 divided by 89 is 8 with a remainder of 78.
The number 8 becomes the next digit in our result. 
Result so far: 9872.898
Subtract 712 from 790 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 10:
780 divided by 89 is 8 with a remainder of 68.
Use 8 as the next digit of our solution. 
Result so far: 9872.8988
If we take 712 away from 780, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The quotient of the division is 9872.8988, and the remainder is 0.00068.