We look at the division of 678572 by 77 
The aim is to understand the frequency of 77 in 678572.

On to step 1:
77 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (7) from the dividend, add it to 6, then carry on: 67 / 77

On to step 2:
67 divided by 77 is 0 with a remainder of 67.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 67 leaves us with 67.
Take the next digit (8) from the dividend and append it to 67, then repeat: 678 / 77

Advancing to step 3:
If we divide 678 by 77, we get 8 and a remainder of 62.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 616 from 678 to get 62.
Grab the next digit (5) from the dividend, add it to 62, then carry on: 625 / 77

Step 4:
77 goes into 625 8 times with a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 88.0
Subtract 616 from 625 to get 9.
Fetch the next digit (7) from the dividend, attach it to 9 and continue: 97 / 77

Let's proceed to step 5:
When dividing 97 by 77, we get 1 with a remainder of 20.
Put 1 as the next digit of the answer. 
Result so far: 881.0
Subtracting 77 from 97 leaves us with 20.
Bring next digit (2) of the dividend behind the 20 and repeat the process: 202 / 77

Going ahead to step 6:
The number 77 fits into 202 2 times, leaving a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 8812.0
Subtract 154 from 202 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 7:
480 divided by 77 is 6 with a remainder of 18.
Write down 6 as next digit of the result. 
Result so far: 8812.6
If we subtract 462 from 480, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
When dividing 180 by 77, we get 2 with a remainder of 26.
Use 2 as the next digit of our solution. 
Result so far: 8812.62
If we subtract 154 from 180, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 9:
The number 77 fits into 260 3 times, leaving a remainder of 29.
Use 3 as the next digit of our solution. 
Result so far: 8812.623
If we take 231 away from 260, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 10:
When dividing 290 by 77, we get 3 with a remainder of 59.
Write down 3 as next digit of the result. 
Result so far: 8812.6233
Subtracting 231 from 290 leaves us with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

The quotient of the division is 8812.6233, and the remainder is 0.00059.