We're dividing 77615382 by 855 
The aim is to understand the frequency of 855 in 77615382.

Let's proceed to step 1:
When dividing 7 by 855, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 855

On to step 2:
The number 855 fits into 77 0 times, leaving a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Include the next digit (6) from the dividend after 77, then repeat: 776 / 855

Going ahead to step 3:
If we divide 776 by 855, we get 0 and a remainder of 776.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 776 and we're left with 776.
Include the next digit (1) from the dividend after 776, then repeat: 7761 / 855

Let's proceed to step 4:
When dividing 7761 by 855, we get 9 with a remainder of 66.
Write down 9 as next digit of the result. 
Result so far: 9.0
Deduct 7695 from 7761 and we're left with 66.
Include the next digit (5) from the dividend after 66, then repeat: 665 / 855

Step 5:
The number 855 fits into 665 0 times, leaving a remainder of 665.
Write down 0 as next digit of the result. 
Result so far: 90.0
Subtracting 0 from 665 leaves us with 665.
Include the next digit (3) from the dividend after 665, then repeat: 6653 / 855

Advancing to step 6:
When dividing 6653 by 855, we get 7 with a remainder of 668.
Use 7 as the next digit of our solution. 
Result so far: 907.0
If we take 5985 away from 6653, we end up with 668.
Fetch the next digit (8) from the dividend, attach it to 668 and continue: 6688 / 855

Advancing to step 7:
6688 divided by 855 is 7 with a remainder of 703.
Use 7 as the next digit of our solution. 
Result so far: 9077.0
If we subtract 5985 from 6688, we get 703.
Append the next digit (2) from the dividend to 703 and continue with: 7032 / 855

Step 8:
855 goes into 7032 8 times with a remainder of 192.
Use 8 as the next digit of our solution. 
Result so far: 90778.0
Subtract 6840 from 7032 to get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Step 9:
1920 divided by 855 is 2 with a remainder of 210.
The next digit of our result is 2. 
Result so far: 90778.2
Deduct 1710 from 1920 and we're left with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 10:
855 goes into 2100 2 times with a remainder of 390.
Use 2 as the next digit of our solution. 
Result so far: 90778.22
If we take 1710 away from 2100, we end up with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

The final outcome is 90778.22, with a leftover of 0.39.