We look at the division of 712079 by 77 
The aim is to understand the frequency of 77 in 712079.

Let's proceed to step 1:
77 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 77

On to step 2:
77 goes into 71 0 times with a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 71 and we're left with 71.
Append the next digit (2) from the dividend to 71 and continue with: 712 / 77

On to step 3:
When dividing 712 by 77, we get 9 with a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 693 from 712 and we're left with 19.
Grab the next digit (0) from the dividend, add it to 19, then carry on: 190 / 77

Advancing to step 4:
The number 77 fits into 190 2 times, leaving a remainder of 36.
The next digit of our result is 2. 
Result so far: 92.0
Subtract 154 from 190 to get 36.
Bring next digit (7) of the dividend behind the 36 and repeat the process: 367 / 77

Moving on to step 5:
If we divide 367 by 77, we get 4 and a remainder of 59.
The next digit of our result is 4. 
Result so far: 924.0
If we subtract 308 from 367, we get 59.
Grab the next digit (9) from the dividend, add it to 59, then carry on: 599 / 77

Moving on to step 6:
If we divide 599 by 77, we get 7 and a remainder of 60.
Write down 7 as next digit of the result. 
Result so far: 9247.0
Subtracting 539 from 599 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 7:
The number 77 fits into 600 7 times, leaving a remainder of 61.
Use 7 as the next digit of our solution. 
Result so far: 9247.7
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 number 7 becomes the next digit in our result. 
Result so far: 9247.77
Subtracting 539 from 610 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

The quotient of the division is 9247.77, and the remainder is 0.071.