688990 divided by 85 
The aim is to understand the frequency of 85 in 688990.

Moving on to step 1:
The number 85 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 85

Moving on to step 2:
85 can be fit into 68 0 times, resulting in a remainder of 68.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 68 after subtracting 0 from 68.
Take the next digit (8) from the dividend and append it to 68, then repeat: 688 / 85

On to step 3:
85 goes into 688 8 times with a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 680 from 688 and we're left with 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 85

Step 4:
85 can be fit into 89 1 times, resulting in a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 81.0
The remainder is 4 after subtracting 85 from 89.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 85

Step 5:
If we divide 49 by 85, we get 0 and a remainder of 49.
Put 0 as the next digit of the answer. 
Result so far: 810.0
If we take 0 away from 49, we end up with 49.
Fetch the next digit (0) from the dividend, attach it to 49 and continue: 490 / 85

On to step 6:
If we divide 490 by 85, we get 5 and a remainder of 65.
Put 5 as the next digit of the answer. 
Result so far: 8105.0
Subtract 425 from 490 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 7:
If we divide 650 by 85, we get 7 and a remainder of 55.
The number 7 becomes the next digit in our result. 
Result so far: 8105.7
Deduct 595 from 650 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 8:
85 can be fit into 550 6 times, resulting in a remainder of 40.
Record the quotient 6 as the next digit in the result. 
Result so far: 8105.76
Deduct 510 from 550 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 9:
400 divided by 85 is 4 with a remainder of 60.
Use 4 as the next digit of our solution. 
Result so far: 8105.764
If we take 340 away from 400, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 10:
85 can be fit into 600 7 times, resulting in a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 8105.7647
Subtract 595 from 600 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 11:
85 can be fit into 50 0 times, resulting in a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 8105.7647
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 12:
When dividing 500 by 85, we get 5 with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 8105.764705
The remainder is 75 after subtracting 425 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 13:
85 can be fit into 750 8 times, resulting in a remainder of 70.
The number 8 becomes the next digit in our result. 
Result so far: 8105.7647058
Deduct 680 from 750 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 14:
If we divide 700 by 85, we get 8 and a remainder of 20.
Use 8 as the next digit of our solution. 
Result so far: 8105.76470588
If we subtract 680 from 700, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 8105.76470588 with a remaining 2e-08.