512552 ÷ 77 
The aim is to understand the frequency of 77 in 512552.

Advancing to step 1:
If we divide 5 by 77, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 77

Going ahead to step 2:
77 goes into 51 0 times with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Take the next digit (2) from the dividend and append it to 51, then repeat: 512 / 77

On to step 3:
77 can be fit into 512 6 times, resulting in a remainder of 50.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
The remainder is 50 after subtracting 462 from 512.
Take the next digit (5) from the dividend and append it to 50, then repeat: 505 / 77

Going ahead to step 4:
77 goes into 505 6 times with a remainder of 43.
Write down 6 as next digit of the result. 
Result so far: 66.0
The remainder is 43 after subtracting 462 from 505.
Take the next digit (5) from the dividend and append it to 43, then repeat: 435 / 77

Advancing to step 5:
77 goes into 435 5 times with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 665.0
If we subtract 385 from 435, we get 50.
Include the next digit (2) from the dividend after 50, then repeat: 502 / 77

Let's proceed to step 6:
When dividing 502 by 77, we get 6 with a remainder of 40.
Put 6 as the next digit of the answer. 
Result so far: 6656.0
Subtract 462 from 502 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 7:
If we divide 400 by 77, we get 5 and a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 6656.5
Subtracting 385 from 400 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 8:
150 divided by 77 is 1 with a remainder of 73.
The next digit of our result is 1. 
Result so far: 6656.51
Subtracting 77 from 150 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 9:
730 divided by 77 is 9 with a remainder of 37.
The next digit of our result is 9. 
Result so far: 6656.519
If we take 693 away from 730, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 10:
If we divide 370 by 77, we get 4 and a remainder of 62.
Write down 4 as next digit of the result. 
Result so far: 6656.5194
The remainder is 62 after subtracting 308 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 11:
620 divided by 77 is 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 6656.51948
Subtract 616 from 620 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 12:
When dividing 40 by 77, we get 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 6656.51948
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 13:
77 can be fit into 400 5 times, resulting in a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 6656.5194805
Subtracting 385 from 400 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 14:
The number 77 fits into 150 1 times, leaving a remainder of 73.
Record the quotient 1 as the next digit in the result. 
Result so far: 6656.51948051
If we take 77 away from 150, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Our division results in 6656.51948051 with a remaining 7.3e-08.