We're dividing 801861 by 77 
The aim is to understand the frequency of 77 in 801861.

On to step 1:
77 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 77

Moving on to step 2:
When dividing 80 by 77, we get 1 with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 77 away from 80, we end up with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 77

Step 3:
77 goes into 31 0 times with a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 10.0
Deduct 0 from 31 and we're left with 31.
Fetch the next digit (8) from the dividend, attach it to 31 and continue: 318 / 77

Moving on to step 4:
The number 77 fits into 318 4 times, leaving a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 104.0
If we take 308 away from 318, we end up with 10.
Take the next digit (6) from the dividend and append it to 10, then repeat: 106 / 77

Advancing to step 5:
When dividing 106 by 77, we get 1 with a remainder of 29.
The next digit of our result is 1. 
Result so far: 1041.0
Deduct 77 from 106 and we're left with 29.
Grab the next digit (1) from the dividend, add it to 29, then carry on: 291 / 77

On to step 6:
77 can be fit into 291 3 times, resulting in a remainder of 60.
The next digit of our result is 3. 
Result so far: 10413.0
The remainder is 60 after subtracting 231 from 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 7:
77 can be fit into 600 7 times, resulting in a remainder of 61.
Write down 7 as next digit of the result. 
Result so far: 10413.7
The remainder is 61 after subtracting 539 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 8:
The number 77 fits into 610 7 times, leaving a remainder of 71.
The next digit of our result is 7. 
Result so far: 10413.77
Subtract 539 from 610 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

In conclusion, the division gives 10413.77 with a balance of 0.071.