We divide 19413655 by 678
The aim is to understand the frequency of 678 in 19413655.

Advancing 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
The remainder is 1 after subtracting 0 from 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 678

On to step 2:
The number 678 fits into 19 0 times, leaving a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Fetch the next digit (4) from the dividend, attach it to 19 and continue: 194 / 678

Let's proceed to step 3:
If we divide 194 by 678, we get 0 and a remainder of 194.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 194 leaves us with 194.
Grab the next digit (1) from the dividend, add it to 194, then carry on: 1941 / 678

On to step 4:
1941 divided by 678 is 2 with a remainder of 585.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 1356 from 1941, we get 585.
Append the next digit (3) from the dividend to 585 and continue with: 5853 / 678

On to step 5:
The number 678 fits into 5853 8 times, leaving a remainder of 429.
The next digit of our result is 8. 
Result so far: 28.0
The remainder is 429 after subtracting 5424 from 5853.
Include the next digit (6) from the dividend after 429, then repeat: 4296 / 678

On to step 6:
When dividing 4296 by 678, we get 6 with a remainder of 228.
Record the quotient 6 as the next digit in the result. 
Result so far: 286.0
Deduct 4068 from 4296 and we're left with 228.
Bring next digit (5) of the dividend behind the 228 and repeat the process: 2285 / 678

On to step 7:
If we divide 2285 by 678, we get 3 and a remainder of 251.
Put 3 as the next digit of the answer. 
Result so far: 2863.0
If we subtract 2034 from 2285, we get 251.
Append the next digit (5) from the dividend to 251 and continue with: 2515 / 678

Moving on to step 8:
The number 678 fits into 2515 3 times, leaving a remainder of 481.
Write down 3 as next digit of the result. 
Result so far: 28633.0
If we subtract 2034 from 2515, we get 481.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4810, and continue the process.

Step 9:
If we divide 4810 by 678, we get 7 and a remainder of 64.
Write down 7 as next digit of the result. 
Result so far: 28633.7
Subtracting 4746 from 4810 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 10:
678 goes into 640 0 times with a remainder of 640.
The next digit of our result is 0. 
Result so far: 28633.7
If we subtract 0 from 640, we get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

On to step 11:
678 can be fit into 6400 9 times, resulting in a remainder of 298.
The number 9 becomes the next digit in our result. 
Result so far: 28633.709
Deduct 6102 from 6400 and we're left with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Step 12:
678 can be fit into 2980 4 times, resulting in a remainder of 268.
The next digit of our result is 4. 
Result so far: 28633.7094
Subtracting 2712 from 2980 leaves us with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Step 13:
678 goes into 2680 3 times with a remainder of 646.
Record the quotient 3 as the next digit in the result. 
Result so far: 28633.70943
If we subtract 2034 from 2680, we get 646.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6460, and continue the process.

Going ahead to step 14:
678 can be fit into 6460 9 times, resulting in a remainder of 358.
The next digit of our result is 9. 
Result so far: 28633.709439
Subtract 6102 from 6460 to get 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Moving on to step 15:
678 goes into 3580 5 times with a remainder of 190.
Record the quotient 5 as the next digit in the result. 
Result so far: 28633.7094395
Subtracting 3390 from 3580 leaves us with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Moving on to step 16:
678 can be fit into 1900 2 times, resulting in a remainder of 544.
Put 2 as the next digit of the answer. 
Result so far: 28633.70943952
Subtracting 1356 from 1900 leaves us with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Our division results in 28633.70943952 with a remaining 5.44e-07.