717390 divided by 77 
The aim is to understand the frequency of 77 in 717390.

Going ahead to step 1:
When dividing 7 by 77, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 77

Moving on to step 2:
When dividing 71 by 77, we get 0 with a remainder of 71.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 71, we get 71.
Fetch the next digit (7) from the dividend, attach it to 71 and continue: 717 / 77

On to step 3:
If we divide 717 by 77, we get 9 and a remainder of 24.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtracting 693 from 717 leaves us with 24.
Bring next digit (3) of the dividend behind the 24 and repeat the process: 243 / 77

Let's proceed to step 4:
If we divide 243 by 77, we get 3 and a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 93.0
If we subtract 231 from 243, we get 12.
Fetch the next digit (9) from the dividend, attach it to 12 and continue: 129 / 77

Let's proceed to step 5:
If we divide 129 by 77, we get 1 and a remainder of 52.
The next digit of our result is 1. 
Result so far: 931.0
If we subtract 77 from 129, we get 52.
Bring next digit (0) of the dividend behind the 52 and repeat the process: 520 / 77

Step 6:
The number 77 fits into 520 6 times, leaving a remainder of 58.
The number 6 becomes the next digit in our result. 
Result so far: 9316.0
Subtract 462 from 520 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 7:
When dividing 580 by 77, we get 7 with a remainder of 41.
Write down 7 as next digit of the result. 
Result so far: 9316.7
The remainder is 41 after subtracting 539 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 8:
The number 77 fits into 410 5 times, leaving a remainder of 25.
The next digit of our result is 5. 
Result so far: 9316.75
Deduct 385 from 410 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 9:
77 goes into 250 3 times with a remainder of 19.
The number 3 becomes the next digit in our result. 
Result so far: 9316.753
The remainder is 19 after subtracting 231 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 10:
77 goes into 190 2 times with a remainder of 36.
Write down 2 as next digit of the result. 
Result so far: 9316.7532
If we take 154 away from 190, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 11:
If we divide 360 by 77, we get 4 and a remainder of 52.
Use 4 as the next digit of our solution. 
Result so far: 9316.75324
If we subtract 308 from 360, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 12:
The number 77 fits into 520 6 times, leaving a remainder of 58.
Use 6 as the next digit of our solution. 
Result so far: 9316.753246
Subtracting 462 from 520 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 13:
580 divided by 77 is 7 with a remainder of 41.
Write down 7 as next digit of the result. 
Result so far: 9316.7532467
Subtracting 539 from 580 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 14:
When dividing 410 by 77, we get 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 9316.75324675
If we subtract 385 from 410, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 9316.75324675 and a remainder of 2.5e-08.