We divide 8451 by 77
The aim is to understand the frequency of 77 in 8451.

On to step 1:
77 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 77

On to step 2:
If we divide 84 by 77, we get 1 and a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 7 after subtracting 77 from 84.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 77

Let's proceed to step 3:
The number 77 fits into 75 0 times, leaving a remainder of 75.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtracting 0 from 75 leaves us with 75.
Take the next digit (1) from the dividend and append it to 75, then repeat: 751 / 77

On to step 4:
77 can be fit into 751 9 times, resulting in a remainder of 58.
The number 9 becomes the next digit in our result. 
Result so far: 109.0
If we take 693 away from 751, we end up 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.

Going ahead to step 5:
580 divided by 77 is 7 with a remainder of 41.
The next digit of our result is 7. 
Result so far: 109.7
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.

Going ahead to step 6:
77 can be fit into 410 5 times, resulting in a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 109.75
Subtracting 385 from 410 leaves us 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.

Let's proceed to step 7:
77 can be fit into 250 3 times, resulting in a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 109.753
If we take 231 away from 250, we end up with 19.
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 8:
77 can be fit into 190 2 times, resulting in a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 109.7532
Subtracting 154 from 190 leaves us 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.

On to step 9:
When dividing 360 by 77, we get 4 with a remainder of 52.
Record the quotient 4 as the next digit in the result. 
Result so far: 109.75324
Subtract 308 from 360 to 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.

On to step 10:
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: 109.753246
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.

Moving on to step 11:
580 divided by 77 is 7 with a remainder of 41.
The number 7 becomes the next digit in our result. 
Result so far: 109.7532467
If we take 539 away from 580, we end up 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.

Step 12:
The number 77 fits into 410 5 times, leaving a remainder of 25.
The next digit of our result is 5. 
Result so far: 109.75324675
The remainder is 25 after subtracting 385 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The quotient of the division is 109.75324675, and the remainder is 2.5e-08.