591475 ÷ 77 
The aim is to understand the frequency of 77 in 591475.

Moving on to step 1:
If we divide 5 by 77, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 77

On to step 2:
59 divided by 77 is 0 with a remainder of 59.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 59 and we're left with 59.
Bring next digit (1) of the dividend behind the 59 and repeat the process: 591 / 77

Let's proceed to step 3:
If we divide 591 by 77, we get 7 and a remainder of 52.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtract 539 from 591 to get 52.
Fetch the next digit (4) from the dividend, attach it to 52 and continue: 524 / 77

On to step 4:
77 can be fit into 524 6 times, resulting in a remainder of 62.
The next digit of our result is 6. 
Result so far: 76.0
If we take 462 away from 524, we end up with 62.
Grab the next digit (7) from the dividend, add it to 62, then carry on: 627 / 77

Going ahead to step 5:
The number 77 fits into 627 8 times, leaving a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 768.0
Subtract 616 from 627 to get 11.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 77

Step 6:
The number 77 fits into 115 1 times, leaving a remainder of 38.
The number 1 becomes the next digit in our result. 
Result so far: 7681.0
Subtracting 77 from 115 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 7:
If we divide 380 by 77, we get 4 and a remainder of 72.
The next digit of our result is 4. 
Result so far: 7681.4
Subtracting 308 from 380 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 8:
When dividing 720 by 77, we get 9 with a remainder of 27.
Record the quotient 9 as the next digit in the result. 
Result so far: 7681.49
Subtract 693 from 720 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 9:
When dividing 270 by 77, we get 3 with a remainder of 39.
Write down 3 as next digit of the result. 
Result so far: 7681.493
Subtracting 231 from 270 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 10:
When dividing 390 by 77, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 7681.4935
The remainder is 5 after subtracting 385 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 11:
The number 77 fits into 50 0 times, leaving a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 7681.4935
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 12:
When dividing 500 by 77, we get 6 with a remainder of 38.
Record the quotient 6 as the next digit in the result. 
Result so far: 7681.493506
The remainder is 38 after subtracting 462 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 13:
The number 77 fits into 380 4 times, leaving a remainder of 72.
Record the quotient 4 as the next digit in the result. 
Result so far: 7681.4935064
If we subtract 308 from 380, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 14:
If we divide 720 by 77, we get 9 and a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 7681.49350649
Deduct 693 from 720 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final outcome is 7681.49350649, with a leftover of 2.7e-08.