30790891 divided by 877 
The aim is to understand the frequency of 877 in 30790891.

Moving on to step 1:
If we divide 3 by 877, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 877

Let's proceed to step 2:
877 can be fit into 30 0 times, resulting in a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 30, we get 30.
Include the next digit (7) from the dividend after 30, then repeat: 307 / 877

Advancing to step 3:
877 goes into 307 0 times with a remainder of 307.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 307 to get 307.
Bring next digit (9) of the dividend behind the 307 and repeat the process: 3079 / 877

On to step 4:
If we divide 3079 by 877, we get 3 and a remainder of 448.
The next digit of our result is 3. 
Result so far: 3.0
If we take 2631 away from 3079, we end up with 448.
Take the next digit (0) from the dividend and append it to 448, then repeat: 4480 / 877

Going ahead to step 5:
If we divide 4480 by 877, we get 5 and a remainder of 95.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
Subtract 4385 from 4480 to get 95.
Take the next digit (8) from the dividend and append it to 95, then repeat: 958 / 877

Step 6:
958 divided by 877 is 1 with a remainder of 81.
Record the quotient 1 as the next digit in the result. 
Result so far: 351.0
Subtract 877 from 958 to get 81.
Grab the next digit (9) from the dividend, add it to 81, then carry on: 819 / 877

Going ahead to step 7:
When dividing 819 by 877, we get 0 with a remainder of 819.
Use 0 as the next digit of our solution. 
Result so far: 3510.0
The remainder is 819 after subtracting 0 from 819.
Append the next digit (1) from the dividend to 819 and continue with: 8191 / 877

Step 8:
When dividing 8191 by 877, we get 9 with a remainder of 298.
The number 9 becomes the next digit in our result. 
Result so far: 35109.0
If we subtract 7893 from 8191, we get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Let's proceed to step 9:
877 goes into 2980 3 times with a remainder of 349.
The number 3 becomes the next digit in our result. 
Result so far: 35109.3
Subtracting 2631 from 2980 leaves us with 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Going ahead to step 10:
The number 877 fits into 3490 3 times, leaving a remainder of 859.
Use 3 as the next digit of our solution. 
Result so far: 35109.33
Deduct 2631 from 3490 and we're left with 859.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8590, and continue the process.

The final outcome is 35109.33, with a leftover of 0.859.