70856407 ÷ 855 
The aim is to understand the frequency of 855 in 70856407.

Step 1:
If we divide 7 by 855, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 855

Moving on to step 2:
The number 855 fits into 70 0 times, leaving a remainder of 70.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 70 to get 70.
Take the next digit (8) from the dividend and append it to 70, then repeat: 708 / 855

Advancing to step 3:
If we divide 708 by 855, we get 0 and a remainder of 708.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 708, we end up with 708.
Fetch the next digit (5) from the dividend, attach it to 708 and continue: 7085 / 855

On to step 4:
7085 divided by 855 is 8 with a remainder of 245.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 6840 from 7085, we get 245.
Grab the next digit (6) from the dividend, add it to 245, then carry on: 2456 / 855

Moving on to step 5:
The number 855 fits into 2456 2 times, leaving a remainder of 746.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
If we subtract 1710 from 2456, we get 746.
Grab the next digit (4) from the dividend, add it to 746, then carry on: 7464 / 855

Let's proceed to step 6:
855 can be fit into 7464 8 times, resulting in a remainder of 624.
Write down 8 as next digit of the result. 
Result so far: 828.0
If we subtract 6840 from 7464, we get 624.
Fetch the next digit (0) from the dividend, attach it to 624 and continue: 6240 / 855

Let's proceed to step 7:
6240 divided by 855 is 7 with a remainder of 255.
Use 7 as the next digit of our solution. 
Result so far: 8287.0
If we take 5985 away from 6240, we end up with 255.
Include the next digit (7) from the dividend after 255, then repeat: 2557 / 855

Advancing to step 8:
855 can be fit into 2557 2 times, resulting in a remainder of 847.
The number 2 becomes the next digit in our result. 
Result so far: 82872.0
Subtracting 1710 from 2557 leaves us with 847.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8470, and continue the process.

On to step 9:
855 goes into 8470 9 times with a remainder of 775.
Record the quotient 9 as the next digit in the result. 
Result so far: 82872.9
If we subtract 7695 from 8470, we get 775.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7750, and continue the process.

On to step 10:
The number 855 fits into 7750 9 times, leaving a remainder of 55.
Record the quotient 9 as the next digit in the result. 
Result so far: 82872.99
Deduct 7695 from 7750 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.

Our division results in 82872.99 with a remaining 0.055.