689485 ÷ 86 
The aim is to understand the frequency of 86 in 689485.

Let's proceed to step 1:
86 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 86

Let's proceed to step 2:
86 goes into 68 0 times with a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 68, we end up with 68.
Bring next digit (9) of the dividend behind the 68 and repeat the process: 689 / 86

Going ahead to step 3:
86 can be fit into 689 8 times, resulting in a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 688 from 689 to get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 86

Let's proceed to step 4:
The number 86 fits into 14 0 times, leaving a remainder of 14.
Record the quotient 0 as the next digit in the result. 
Result so far: 80.0
Subtract 0 from 14 to get 14.
Include the next digit (8) from the dividend after 14, then repeat: 148 / 86

Step 5:
When dividing 148 by 86, we get 1 with a remainder of 62.
The next digit of our result is 1. 
Result so far: 801.0
Subtracting 86 from 148 leaves us with 62.
Bring next digit (5) of the dividend behind the 62 and repeat the process: 625 / 86

Advancing to step 6:
The number 86 fits into 625 7 times, leaving a remainder of 23.
The next digit of our result is 7. 
Result so far: 8017.0
The remainder is 23 after subtracting 602 from 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 7:
86 can be fit into 230 2 times, resulting in a remainder of 58.
The number 2 becomes the next digit in our result. 
Result so far: 8017.2
Subtracting 172 from 230 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 8:
The number 86 fits into 580 6 times, leaving a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 8017.26
The remainder is 64 after subtracting 516 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 9:
640 divided by 86 is 7 with a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 8017.267
If we subtract 602 from 640, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 10:
The number 86 fits into 380 4 times, leaving a remainder of 36.
The number 4 becomes the next digit in our result. 
Result so far: 8017.2674
If we subtract 344 from 380, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 11:
86 goes into 360 4 times with a remainder of 16.
The next digit of our result is 4. 
Result so far: 8017.26744
If we subtract 344 from 360, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

After the division, we end up with 8017.26744 and a remainder of 1.6e-05.