992438 divided by 86 
The aim is to understand the frequency of 86 in 992438.

On to step 1:
The number 86 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 86

Moving on to step 2:
The number 86 fits into 99 1 times, leaving a remainder of 13.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 86 from 99 and we're left with 13.
Grab the next digit (2) from the dividend, add it to 13, then carry on: 132 / 86

On to step 3:
If we divide 132 by 86, we get 1 and a remainder of 46.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we take 86 away from 132, we end up with 46.
Bring next digit (4) of the dividend behind the 46 and repeat the process: 464 / 86

Going ahead to step 4:
464 divided by 86 is 5 with a remainder of 34.
Record the quotient 5 as the next digit in the result. 
Result so far: 115.0
Subtracting 430 from 464 leaves us with 34.
Bring next digit (3) of the dividend behind the 34 and repeat the process: 343 / 86

On to step 5:
343 divided by 86 is 3 with a remainder of 85.
Write down 3 as next digit of the result. 
Result so far: 1153.0
If we subtract 258 from 343, we get 85.
Include the next digit (8) from the dividend after 85, then repeat: 858 / 86

Moving on to step 6:
86 can be fit into 858 9 times, resulting in a remainder of 84.
Record the quotient 9 as the next digit in the result. 
Result so far: 11539.0
Deduct 774 from 858 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Step 7:
86 goes into 840 9 times with a remainder of 66.
The next digit of our result is 9. 
Result so far: 11539.9
The remainder is 66 after subtracting 774 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 8:
When dividing 660 by 86, we get 7 with a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 11539.97
Deduct 602 from 660 and we're left 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.

Step 9:
86 goes into 580 6 times with a remainder of 64.
The next digit of our result is 6. 
Result so far: 11539.976
If we take 516 away from 580, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 10:
640 divided by 86 is 7 with a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 11539.9767
Deduct 602 from 640 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 11:
86 can be fit into 380 4 times, resulting in a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 11539.97674
Deduct 344 from 380 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 12:
When dividing 360 by 86, we get 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 11539.976744
Subtract 344 from 360 to 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.

The final result is 11539.976744 with a remainder of 1.6e-06.