669373 divided by 77 
The aim is to understand the frequency of 77 in 669373.

Let's proceed to step 1:
When dividing 6 by 77, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 77

Let's proceed to step 2:
The number 77 fits into 66 0 times, leaving a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Bring next digit (9) of the dividend behind the 66 and repeat the process: 669 / 77

On to step 3:
When dividing 669 by 77, we get 8 with a remainder of 53.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 616 from 669 to get 53.
Fetch the next digit (3) from the dividend, attach it to 53 and continue: 533 / 77

On to step 4:
77 can be fit into 533 6 times, resulting in a remainder of 71.
Write down 6 as next digit of the result. 
Result so far: 86.0
Subtracting 462 from 533 leaves us with 71.
Take the next digit (7) from the dividend and append it to 71, then repeat: 717 / 77

Let's proceed to step 5:
The number 77 fits into 717 9 times, leaving a remainder of 24.
The next digit of our result is 9. 
Result so far: 869.0
If we subtract 693 from 717, we get 24.
Take the next digit (3) from the dividend and append it to 24, then repeat: 243 / 77

Step 6:
77 goes into 243 3 times with a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 8693.0
The remainder is 12 after subtracting 231 from 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 7:
77 can be fit into 120 1 times, resulting in a remainder of 43.
The next digit of our result is 1. 
Result so far: 8693.1
If we subtract 77 from 120, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 8:
77 can be fit into 430 5 times, resulting in a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 8693.15
Subtracting 385 from 430 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 9:
When dividing 450 by 77, we get 5 with a remainder of 65.
The next digit of our result is 5. 
Result so far: 8693.155
If we subtract 385 from 450, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

The quotient of the division is 8693.155, and the remainder is 0.0065.