We look at the division of 430245 by 77 
The aim is to understand the frequency of 77 in 430245.

On to step 1:
The number 77 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 77

Advancing to step 2:
77 goes into 43 0 times with a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Take the next digit (0) from the dividend and append it to 43, then repeat: 430 / 77

On to step 3:
If we divide 430 by 77, we get 5 and a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 385 from 430 and we're left with 45.
Bring next digit (2) of the dividend behind the 45 and repeat the process: 452 / 77

Advancing to step 4:
If we divide 452 by 77, we get 5 and a remainder of 67.
The next digit of our result is 5. 
Result so far: 55.0
If we take 385 away from 452, we end up with 67.
Append the next digit (4) from the dividend to 67 and continue with: 674 / 77

Let's proceed to step 5:
If we divide 674 by 77, we get 8 and a remainder of 58.
The next digit of our result is 8. 
Result so far: 558.0
If we take 616 away from 674, we end up with 58.
Bring next digit (5) of the dividend behind the 58 and repeat the process: 585 / 77

Advancing to step 6:
585 divided by 77 is 7 with a remainder of 46.
The next digit of our result is 7. 
Result so far: 5587.0
If we subtract 539 from 585, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 7:
77 goes into 460 5 times with a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 5587.5
Subtract 385 from 460 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 8:
If we divide 750 by 77, we get 9 and a remainder of 57.
Put 9 as the next digit of the answer. 
Result so far: 5587.59
Subtract 693 from 750 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 9:
When dividing 570 by 77, we get 7 with a remainder of 31.
Put 7 as the next digit of the answer. 
Result so far: 5587.597
Deduct 539 from 570 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 10:
If we divide 310 by 77, we get 4 and a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 5587.5974
Subtracting 308 from 310 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 11:
When dividing 20 by 77, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 5587.5974
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 12:
77 goes into 200 2 times with a remainder of 46.
Write down 2 as next digit of the result. 
Result so far: 5587.597402
Deduct 154 from 200 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 13:
77 goes into 460 5 times with a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 5587.5974025
Subtract 385 from 460 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 14:
77 goes into 750 9 times with a remainder of 57.
The number 9 becomes the next digit in our result. 
Result so far: 5587.59740259
If we subtract 693 from 750, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

After the division, we end up with 5587.59740259 and a remainder of 5.7e-08.