We look at the division of 857146 by 78 
The aim is to understand the frequency of 78 in 857146.

Moving on to step 1:
8 divided by 78 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 78

Advancing to step 2:
The number 78 fits into 85 1 times, leaving a remainder of 7.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 78 from 85, we get 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 78

Step 3:
The number 78 fits into 77 0 times, leaving a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 77 and we're left with 77.
Append the next digit (1) from the dividend to 77 and continue with: 771 / 78

On to step 4:
771 divided by 78 is 9 with a remainder of 69.
The next digit of our result is 9. 
Result so far: 109.0
Deduct 702 from 771 and we're left with 69.
Grab the next digit (4) from the dividend, add it to 69, then carry on: 694 / 78

Going ahead to step 5:
If we divide 694 by 78, we get 8 and a remainder of 70.
Use 8 as the next digit of our solution. 
Result so far: 1098.0
If we take 624 away from 694, we end up with 70.
Fetch the next digit (6) from the dividend, attach it to 70 and continue: 706 / 78

Step 6:
If we divide 706 by 78, we get 9 and a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 10989.0
Deduct 702 from 706 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
The number 78 fits into 40 0 times, leaving a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 10989.0
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 8:
When dividing 400 by 78, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 10989.05
If we take 390 away from 400, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
100 divided by 78 is 1 with a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 10989.051
Deduct 78 from 100 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 10:
78 goes into 220 2 times with a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 10989.0512
If we take 156 away from 220, we end up 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 11:
If we divide 640 by 78, we get 8 and a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 10989.05128
Deduct 624 from 640 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 12:
160 divided by 78 is 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 10989.051282
Subtract 156 from 160 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 13:
If we divide 40 by 78, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 10989.051282
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 14:
The number 78 fits into 400 5 times, leaving a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 10989.05128205
Subtract 390 from 400 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 10989.05128205 and a remainder of 1e-08.