903402 divided by 78 
The aim is to understand the frequency of 78 in 903402.

Moving on to step 1:
9 divided by 78 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 78

Step 2:
78 goes into 90 1 times with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 78 from 90 to get 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 78

Going ahead to step 3:
When dividing 123 by 78, we get 1 with a remainder of 45.
The next digit of our result is 1. 
Result so far: 11.0
If we subtract 78 from 123, we get 45.
Take the next digit (4) from the dividend and append it to 45, then repeat: 454 / 78

Step 4:
78 goes into 454 5 times with a remainder of 64.
The number 5 becomes the next digit in our result. 
Result so far: 115.0
The remainder is 64 after subtracting 390 from 454.
Bring next digit (0) of the dividend behind the 64 and repeat the process: 640 / 78

Going ahead to step 5:
The number 78 fits into 640 8 times, leaving a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 1158.0
Subtract 624 from 640 to get 16.
Take the next digit (2) from the dividend and append it to 16, then repeat: 162 / 78

Let's proceed to step 6:
78 can be fit into 162 2 times, resulting in a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 11582.0
If we subtract 156 from 162, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
The number 78 fits into 60 0 times, leaving a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 11582.0
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 8:
The number 78 fits into 600 7 times, leaving a remainder of 54.
The number 7 becomes the next digit in our result. 
Result so far: 11582.07
Subtracting 546 from 600 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 9:
78 can be fit into 540 6 times, resulting in a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 11582.076
If we take 468 away from 540, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 10:
78 can be fit into 720 9 times, resulting in a remainder of 18.
Record the quotient 9 as the next digit in the result. 
Result so far: 11582.0769
If we take 702 away from 720, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 11:
78 goes into 180 2 times with a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 11582.07692
Deduct 156 from 180 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 12:
When dividing 240 by 78, we get 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 11582.076923
The remainder is 6 after subtracting 234 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 13:
When dividing 60 by 78, we get 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 11582.076923
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
600 divided by 78 is 7 with a remainder of 54.
The next digit of our result is 7. 
Result so far: 11582.07692307
If we subtract 546 from 600, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The quotient of the division is 11582.07692307, and the remainder is 5.4e-08.