We're dividing 6273409 by 77 
The aim is to understand the frequency of 77 in 6273409.

Let's proceed to step 1:
If we divide 6 by 77, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 77

On to step 2:
When dividing 62 by 77, we get 0 with a remainder of 62.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 62 leaves us with 62.
Bring next digit (7) of the dividend behind the 62 and repeat the process: 627 / 77

Going ahead to step 3:
The number 77 fits into 627 8 times, leaving a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 616 from 627 to get 11.
Grab the next digit (3) from the dividend, add it to 11, then carry on: 113 / 77

Step 4:
77 goes into 113 1 times with a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 81.0
The remainder is 36 after subtracting 77 from 113.
Include the next digit (4) from the dividend after 36, then repeat: 364 / 77

Step 5:
364 divided by 77 is 4 with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 814.0
Subtracting 308 from 364 leaves us with 56.
Take the next digit (0) from the dividend and append it to 56, then repeat: 560 / 77

Moving on to step 6:
If we divide 560 by 77, we get 7 and a remainder of 21.
The number 7 becomes the next digit in our result. 
Result so far: 8147.0
If we subtract 539 from 560, we get 21.
Bring next digit (9) of the dividend behind the 21 and repeat the process: 219 / 77

Moving on to step 7:
If we divide 219 by 77, we get 2 and a remainder of 65.
The number 2 becomes the next digit in our result. 
Result so far: 81472.0
Deduct 154 from 219 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 8:
650 divided by 77 is 8 with a remainder of 34.
The number 8 becomes the next digit in our result. 
Result so far: 81472.8
The remainder is 34 after subtracting 616 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 9:
When dividing 340 by 77, we get 4 with a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 81472.84
Subtracting 308 from 340 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 10:
When dividing 320 by 77, we get 4 with a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 81472.844
If we take 308 away from 320, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 81472.844 and a remainder of 0.0012.