We're dividing 689357 by 77 
The aim is to understand the frequency of 77 in 689357.

Advancing to step 1:
If we divide 6 by 77, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 77

Going ahead to step 2:
The number 77 fits into 68 0 times, leaving a remainder of 68.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Grab the next digit (9) from the dividend, add it to 68, then carry on: 689 / 77

Moving on to step 3:
When dividing 689 by 77, we get 8 with a remainder of 73.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
If we take 616 away from 689, we end up with 73.
Append the next digit (3) from the dividend to 73 and continue with: 733 / 77

Step 4:
733 divided by 77 is 9 with a remainder of 40.
Put 9 as the next digit of the answer. 
Result so far: 89.0
The remainder is 40 after subtracting 693 from 733.
Take the next digit (5) from the dividend and append it to 40, then repeat: 405 / 77

Step 5:
When dividing 405 by 77, we get 5 with a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 895.0
Deduct 385 from 405 and we're left with 20.
Take the next digit (7) from the dividend and append it to 20, then repeat: 207 / 77

On to step 6:
207 divided by 77 is 2 with a remainder of 53.
Record the quotient 2 as the next digit in the result. 
Result so far: 8952.0
Subtract 154 from 207 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 7:
The number 77 fits into 530 6 times, leaving a remainder of 68.
Put 6 as the next digit of the answer. 
Result so far: 8952.6
Subtract 462 from 530 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 8:
77 goes into 680 8 times with a remainder of 64.
Use 8 as the next digit of our solution. 
Result so far: 8952.68
The remainder is 64 after subtracting 616 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 9:
77 goes into 640 8 times with a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 8952.688
Subtract 616 from 640 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

After the division, we end up with 8952.688 and a remainder of 0.0024.