80677887 ÷ 810 
The aim is to understand the frequency of 810 in 80677887.

Going ahead to step 1:
810 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 810

Advancing to step 2:
When dividing 80 by 810, we get 0 with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 80, we end up with 80.
Take the next digit (6) from the dividend and append it to 80, then repeat: 806 / 810

Moving on to step 3:
When dividing 806 by 810, we get 0 with a remainder of 806.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 806 after subtracting 0 from 806.
Append the next digit (7) from the dividend to 806 and continue with: 8067 / 810

On to step 4:
810 goes into 8067 9 times with a remainder of 777.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 7290 from 8067 and we're left with 777.
Grab the next digit (7) from the dividend, add it to 777, then carry on: 7777 / 810

Moving on to step 5:
810 can be fit into 7777 9 times, resulting in a remainder of 487.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
If we take 7290 away from 7777, we end up with 487.
Fetch the next digit (8) from the dividend, attach it to 487 and continue: 4878 / 810

Moving on to step 6:
If we divide 4878 by 810, we get 6 and a remainder of 18.
The next digit of our result is 6. 
Result so far: 996.0
Deduct 4860 from 4878 and we're left with 18.
Grab the next digit (8) from the dividend, add it to 18, then carry on: 188 / 810

Let's proceed to step 7:
The number 810 fits into 188 0 times, leaving a remainder of 188.
The number 0 becomes the next digit in our result. 
Result so far: 9960.0
Deduct 0 from 188 and we're left with 188.
Bring next digit (7) of the dividend behind the 188 and repeat the process: 1887 / 810

Going ahead to step 8:
When dividing 1887 by 810, we get 2 with a remainder of 267.
Put 2 as the next digit of the answer. 
Result so far: 99602.0
Deduct 1620 from 1887 and we're left with 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Moving on to step 9:
The number 810 fits into 2670 3 times, leaving a remainder of 240.
Record the quotient 3 as the next digit in the result. 
Result so far: 99602.3
Subtracting 2430 from 2670 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 10:
810 can be fit into 2400 2 times, resulting in a remainder of 780.
The number 2 becomes the next digit in our result. 
Result so far: 99602.32
Subtract 1620 from 2400 to get 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

Advancing to step 11:
7800 divided by 810 is 9 with a remainder of 510.
The next digit of our result is 9. 
Result so far: 99602.329
Subtracting 7290 from 7800 leaves us with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Moving on to step 12:
810 can be fit into 5100 6 times, resulting in a remainder of 240.
Record the quotient 6 as the next digit in the result. 
Result so far: 99602.3296
Subtract 4860 from 5100 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 13:
If we divide 2400 by 810, we get 2 and a remainder of 780.
The next digit of our result is 2. 
Result so far: 99602.32962
If we take 1620 away from 2400, we end up with 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

Moving on to step 14:
The number 810 fits into 7800 9 times, leaving a remainder of 510.
Put 9 as the next digit of the answer. 
Result so far: 99602.329629
Subtracting 7290 from 7800 leaves us with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Going ahead to step 15:
When dividing 5100 by 810, we get 6 with a remainder of 240.
The number 6 becomes the next digit in our result. 
Result so far: 99602.3296296
If we subtract 4860 from 5100, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 16:
2400 divided by 810 is 2 with a remainder of 780.
Record the quotient 2 as the next digit in the result. 
Result so far: 99602.32962962
The remainder is 780 after subtracting 1620 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

After the division, we end up with 99602.32962962 and a remainder of 7.8e-07.