We're dividing 777980 by 17 
The aim is to understand the frequency of 17 in 777980.

Moving on to step 1:
The number 17 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 17

Moving on to step 2:
77 divided by 17 is 4 with a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 68 from 77, we get 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 17

Going ahead to step 3:
When dividing 97 by 17, we get 5 with a remainder of 12.
The next digit of our result is 5. 
Result so far: 45.0
Subtracting 85 from 97 leaves us with 12.
Grab the next digit (9) from the dividend, add it to 12, then carry on: 129 / 17

Step 4:
129 divided by 17 is 7 with a remainder of 10.
Record the quotient 7 as the next digit in the result. 
Result so far: 457.0
Subtract 119 from 129 to get 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 17

On to step 5:
When dividing 108 by 17, we get 6 with a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 4576.0
Deduct 102 from 108 and we're left with 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 17

Let's proceed to step 6:
If we divide 60 by 17, we get 3 and a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 45763.0
Subtract 51 from 60 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 7:
If we divide 90 by 17, we get 5 and a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 45763.5
If we subtract 85 from 90, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 8:
When dividing 50 by 17, we get 2 with a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 45763.52
Subtracting 34 from 50 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
The number 17 fits into 160 9 times, leaving a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 45763.529
Deduct 153 from 160 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 10:
The number 17 fits into 70 4 times, leaving a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 45763.5294
The remainder is 2 after subtracting 68 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 11:
If we divide 20 by 17, we get 1 and a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 45763.52941
The remainder is 3 after subtracting 17 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 12:
17 can be fit into 30 1 times, resulting in a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 45763.529411
Deduct 17 from 30 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The final result is 45763.529411 with a remainder of 1.3e-06.