74272891 ÷ 878 
The aim is to understand the frequency of 878 in 74272891.

Moving on to step 1:
If we divide 7 by 878, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 878

Going ahead to step 2:
The number 878 fits into 74 0 times, leaving a remainder of 74.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 74 and we're left with 74.
Grab the next digit (2) from the dividend, add it to 74, then carry on: 742 / 878

Going ahead to step 3:
878 can be fit into 742 0 times, resulting in a remainder of 742.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 742 after subtracting 0 from 742.
Append the next digit (7) from the dividend to 742 and continue with: 7427 / 878

Let's proceed to step 4:
878 goes into 7427 8 times with a remainder of 403.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
If we take 7024 away from 7427, we end up with 403.
Bring next digit (2) of the dividend behind the 403 and repeat the process: 4032 / 878

Let's proceed to step 5:
878 goes into 4032 4 times with a remainder of 520.
Write down 4 as next digit of the result. 
Result so far: 84.0
Deduct 3512 from 4032 and we're left with 520.
Append the next digit (8) from the dividend to 520 and continue with: 5208 / 878

Moving on to step 6:
If we divide 5208 by 878, we get 5 and a remainder of 818.
Put 5 as the next digit of the answer. 
Result so far: 845.0
If we take 4390 away from 5208, we end up with 818.
Bring next digit (9) of the dividend behind the 818 and repeat the process: 8189 / 878

On to step 7:
878 can be fit into 8189 9 times, resulting in a remainder of 287.
Record the quotient 9 as the next digit in the result. 
Result so far: 8459.0
Deduct 7902 from 8189 and we're left with 287.
Grab the next digit (1) from the dividend, add it to 287, then carry on: 2871 / 878

On to step 8:
The number 878 fits into 2871 3 times, leaving a remainder of 237.
The number 3 becomes the next digit in our result. 
Result so far: 84593.0
Subtracting 2634 from 2871 leaves us with 237.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Going ahead to step 9:
2370 divided by 878 is 2 with a remainder of 614.
The number 2 becomes the next digit in our result. 
Result so far: 84593.2
Deduct 1756 from 2370 and we're left with 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

Let's proceed to step 10:
The number 878 fits into 6140 6 times, leaving a remainder of 872.
Record the quotient 6 as the next digit in the result. 
Result so far: 84593.26
The remainder is 872 after subtracting 5268 from 6140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8720, and continue the process.

On to step 11:
878 goes into 8720 9 times with a remainder of 818.
Use 9 as the next digit of our solution. 
Result so far: 84593.269
If we subtract 7902 from 8720, we get 818.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8180, and continue the process.

Moving on to step 12:
878 can be fit into 8180 9 times, resulting in a remainder of 278.
Write down 9 as next digit of the result. 
Result so far: 84593.2699
If we take 7902 away from 8180, we end up with 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

The quotient of the division is 84593.2699, and the remainder is 0.00278.