We look at the division of 17273341 by 678 
The aim is to understand the frequency of 678 in 17273341.

Going ahead to step 1:
678 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 678

Moving on to step 2:
678 goes into 17 0 times with a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Include the next digit (2) from the dividend after 17, then repeat: 172 / 678

Moving on to step 3:
172 divided by 678 is 0 with a remainder of 172.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 172, we get 172.
Bring next digit (7) of the dividend behind the 172 and repeat the process: 1727 / 678

On to step 4:
The number 678 fits into 1727 2 times, leaving a remainder of 371.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 1356 from 1727, we get 371.
Take the next digit (3) from the dividend and append it to 371, then repeat: 3713 / 678

On to step 5:
If we divide 3713 by 678, we get 5 and a remainder of 323.
The next digit of our result is 5. 
Result so far: 25.0
If we subtract 3390 from 3713, we get 323.
Take the next digit (3) from the dividend and append it to 323, then repeat: 3233 / 678

Going ahead to step 6:
When dividing 3233 by 678, we get 4 with a remainder of 521.
The next digit of our result is 4. 
Result so far: 254.0
Deduct 2712 from 3233 and we're left with 521.
Take the next digit (4) from the dividend and append it to 521, then repeat: 5214 / 678

On to step 7:
678 can be fit into 5214 7 times, resulting in a remainder of 468.
The number 7 becomes the next digit in our result. 
Result so far: 2547.0
The remainder is 468 after subtracting 4746 from 5214.
Bring next digit (1) of the dividend behind the 468 and repeat the process: 4681 / 678

Advancing to step 8:
678 can be fit into 4681 6 times, resulting in a remainder of 613.
The next digit of our result is 6. 
Result so far: 25476.0
If we take 4068 away from 4681, we end up with 613.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6130, and continue the process.

Going ahead to step 9:
6130 divided by 678 is 9 with a remainder of 28.
Use 9 as the next digit of our solution. 
Result so far: 25476.9
Deduct 6102 from 6130 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 10:
280 divided by 678 is 0 with a remainder of 280.
Write down 0 as next digit of the result. 
Result so far: 25476.9
Subtract 0 from 280 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 11:
If we divide 2800 by 678, we get 4 and a remainder of 88.
The number 4 becomes the next digit in our result. 
Result so far: 25476.904
If we subtract 2712 from 2800, we get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Advancing to step 12:
The number 678 fits into 880 1 times, leaving a remainder of 202.
Put 1 as the next digit of the answer. 
Result so far: 25476.9041
Subtracting 678 from 880 leaves us with 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Going ahead to step 13:
678 goes into 2020 2 times with a remainder of 664.
Record the quotient 2 as the next digit in the result. 
Result so far: 25476.90412
If we subtract 1356 from 2020, we get 664.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6640, and continue the process.

On to step 14:
When dividing 6640 by 678, we get 9 with a remainder of 538.
Record the quotient 9 as the next digit in the result. 
Result so far: 25476.904129
Deduct 6102 from 6640 and we're left with 538.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5380, and continue the process.

Advancing to step 15:
678 can be fit into 5380 7 times, resulting in a remainder of 634.
Record the quotient 7 as the next digit in the result. 
Result so far: 25476.9041297
Subtract 4746 from 5380 to get 634.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6340, and continue the process.

Let's proceed to step 16:
678 can be fit into 6340 9 times, resulting in a remainder of 238.
Write down 9 as next digit of the result. 
Result so far: 25476.90412979
Subtracting 6102 from 6340 leaves us with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

After the division, we end up with 25476.90412979 and a remainder of 2.38e-07.