77966877 ÷ 5 
The aim is to understand the frequency of 5 in 77966877.

Moving on to step 1:
7 divided by 5 is 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 2 after subtracting 5 from 7.
Grab the next digit (7) from the dividend, add it to 2, then carry on: 27 / 5

Step 2:
5 goes into 27 5 times with a remainder of 2.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 25 away from 27, we end up with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 5

Moving on to step 3:
29 divided by 5 is 5 with a remainder of 4.
Put 5 as the next digit of the answer. 
Result so far: 155.0
Subtracting 25 from 29 leaves us with 4.
Take the next digit (6) from the dividend and append it to 4, then repeat: 46 / 5

Let's proceed to step 4:
When dividing 46 by 5, we get 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 1559.0
Subtracting 45 from 46 leaves us with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 5

Advancing to step 5:
5 can be fit into 16 3 times, resulting in a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 15593.0
Deduct 15 from 16 and we're left with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 5

Advancing to step 6:
5 can be fit into 18 3 times, resulting in a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 155933.0
Deduct 15 from 18 and we're left with 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 5

On to step 7:
When dividing 37 by 5, we get 7 with a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 1559337.0
Subtract 35 from 37 to get 2.
Grab the next digit (7) from the dividend, add it to 2, then carry on: 27 / 5

Step 8:
5 goes into 27 5 times with a remainder of 2.
Record the quotient 5 as the next digit in the result. 
Result so far: 15593375.0
The remainder is 2 after subtracting 25 from 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 9:
20 divided by 5 is 4 with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 15593375.4
Subtract 20 from 20 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
If we divide 0 by 5, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 15593375.4
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
5 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 15593375.4
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 15593375.4 with a remaining 0.0.