805201 ÷ 77 
The aim is to understand the frequency of 77 in 805201.

Let's proceed 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
Subtracting 0 from 8 leaves us with 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 77

Going ahead to step 2:
When dividing 80 by 77, we get 1 with a remainder of 3.
The next digit of our result is 1. 
Result so far: 1.0
If we take 77 away from 80, we end up with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 77

On to step 3:
The number 77 fits into 35 0 times, leaving a remainder of 35.
Write down 0 as next digit of the result. 
Result so far: 10.0
Deduct 0 from 35 and we're left with 35.
Append the next digit (2) from the dividend to 35 and continue with: 352 / 77

Moving on to step 4:
352 divided by 77 is 4 with a remainder of 44.
The next digit of our result is 4. 
Result so far: 104.0
Subtracting 308 from 352 leaves us with 44.
Include the next digit (0) from the dividend after 44, then repeat: 440 / 77

On to step 5:
440 divided by 77 is 5 with a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 1045.0
Subtracting 385 from 440 leaves us with 55.
Include the next digit (1) from the dividend after 55, then repeat: 551 / 77

On to step 6:
If we divide 551 by 77, we get 7 and a remainder of 12.
Use 7 as the next digit of our solution. 
Result so far: 10457.0
Deduct 539 from 551 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 7:
The number 77 fits into 120 1 times, leaving a remainder of 43.
Write down 1 as next digit of the result. 
Result so far: 10457.1
If we subtract 77 from 120, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 8:
The number 77 fits into 430 5 times, leaving a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 10457.15
Subtract 385 from 430 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 9:
77 can be fit into 450 5 times, resulting in a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 10457.155
Subtract 385 from 450 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

The final result is 10457.155 with a remainder of 0.0065.