258342 divided by 85 
The aim is to understand the frequency of 85 in 258342.

On to step 1:
85 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 85

Moving on to step 2:
The number 85 fits into 25 0 times, leaving a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Fetch the next digit (8) from the dividend, attach it to 25 and continue: 258 / 85

On to step 3:
85 can be fit into 258 3 times, resulting in a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 255 from 258, we get 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 85

On to step 4:
85 can be fit into 33 0 times, resulting in a remainder of 33.
Use 0 as the next digit of our solution. 
Result so far: 30.0
Subtracting 0 from 33 leaves us with 33.
Fetch the next digit (4) from the dividend, attach it to 33 and continue: 334 / 85

On to step 5:
If we divide 334 by 85, we get 3 and a remainder of 79.
Write down 3 as next digit of the result. 
Result so far: 303.0
Subtracting 255 from 334 leaves us with 79.
Append the next digit (2) from the dividend to 79 and continue with: 792 / 85

Moving on to step 6:
If we divide 792 by 85, we get 9 and a remainder of 27.
Put 9 as the next digit of the answer. 
Result so far: 3039.0
If we take 765 away from 792, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 7:
If we divide 270 by 85, we get 3 and a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 3039.3
Subtracting 255 from 270 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 8:
When dividing 150 by 85, we get 1 with a remainder of 65.
The number 1 becomes the next digit in our result. 
Result so far: 3039.31
If we take 85 away from 150, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 9:
650 divided by 85 is 7 with a remainder of 55.
Record the quotient 7 as the next digit in the result. 
Result so far: 3039.317
If we subtract 595 from 650, we 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.

Going ahead to step 10:
When dividing 550 by 85, we get 6 with a remainder of 40.
Put 6 as the next digit of the answer. 
Result so far: 3039.3176
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 11:
The number 85 fits into 400 4 times, leaving a remainder of 60.
Write down 4 as next digit of the result. 
Result so far: 3039.31764
If we subtract 340 from 400, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 12:
The number 85 fits into 600 7 times, leaving a remainder of 5.
The next digit of our result is 7. 
Result so far: 3039.317647
If we subtract 595 from 600, we 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.

Advancing to step 13:
50 divided by 85 is 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 3039.317647
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 14:
500 divided by 85 is 5 with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 3039.31764705
Subtract 425 from 500 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Our division results in 3039.31764705 with a remaining 7.5e-08.