800880 ÷ 77 
The aim is to understand the frequency of 77 in 800880.

Let's proceed to step 1:
The number 77 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 77

Step 2:
77 can be fit into 80 1 times, resulting in a remainder of 3.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 77 from 80 and we're left with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 77

Moving on to step 3:
30 divided by 77 is 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we subtract 0 from 30, we get 30.
Take the next digit (8) from the dividend and append it to 30, then repeat: 308 / 77

Going ahead to step 4:
77 can be fit into 308 4 times, resulting in a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 104.0
Subtracting 308 from 308 leaves us with 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 77

Moving on to step 5:
If we divide 8 by 77, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 1040.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 77

Advancing to step 6:
If we divide 80 by 77, we get 1 and a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 10401.0
If we subtract 77 from 80, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
77 goes into 30 0 times with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 10401.0
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
If we divide 300 by 77, we get 3 and a remainder of 69.
Record the quotient 3 as the next digit in the result. 
Result so far: 10401.03
The remainder is 69 after subtracting 231 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 9:
If we divide 690 by 77, we get 8 and a remainder of 74.
Write down 8 as next digit of the result. 
Result so far: 10401.038
If we take 616 away from 690, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 10:
77 can be fit into 740 9 times, resulting in a remainder of 47.
Use 9 as the next digit of our solution. 
Result so far: 10401.0389
If we subtract 693 from 740, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 11:
77 can be fit into 470 6 times, resulting in a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 10401.03896
The remainder is 8 after subtracting 462 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 12:
The number 77 fits into 80 1 times, leaving a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 10401.038961
Subtract 77 from 80 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 13:
77 can be fit into 30 0 times, resulting in a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 10401.038961
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 14:
300 divided by 77 is 3 with a remainder of 69.
Put 3 as the next digit of the answer. 
Result so far: 10401.03896103
Subtracting 231 from 300 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Our division results in 10401.03896103 with a remaining 6.9e-08.