973428 divided by 78 
The aim is to understand the frequency of 78 in 973428.

Going ahead to step 1:
The number 78 fits into 9 0 times, leaving a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 78

On to step 2:
When dividing 97 by 78, we get 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 78 from 97 leaves us with 19.
Bring next digit (3) of the dividend behind the 19 and repeat the process: 193 / 78

Step 3:
If we divide 193 by 78, we get 2 and a remainder of 37.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtract 156 from 193 to get 37.
Include the next digit (4) from the dividend after 37, then repeat: 374 / 78

Moving on to step 4:
78 can be fit into 374 4 times, resulting in a remainder of 62.
Record the quotient 4 as the next digit in the result. 
Result so far: 124.0
The remainder is 62 after subtracting 312 from 374.
Fetch the next digit (2) from the dividend, attach it to 62 and continue: 622 / 78

On to step 5:
78 can be fit into 622 7 times, resulting in a remainder of 76.
Use 7 as the next digit of our solution. 
Result so far: 1247.0
If we take 546 away from 622, we end up with 76.
Include the next digit (8) from the dividend after 76, then repeat: 768 / 78

Let's proceed to step 6:
If we divide 768 by 78, we get 9 and a remainder of 66.
Put 9 as the next digit of the answer. 
Result so far: 12479.0
If we subtract 702 from 768, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 7:
When dividing 660 by 78, we get 8 with a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 12479.8
Deduct 624 from 660 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 8:
360 divided by 78 is 4 with a remainder of 48.
The next digit of our result is 4. 
Result so far: 12479.84
If we subtract 312 from 360, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 9:
78 can be fit into 480 6 times, resulting in a remainder of 12.
The next digit of our result is 6. 
Result so far: 12479.846
Subtracting 468 from 480 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 10:
When dividing 120 by 78, we get 1 with a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 12479.8461
Subtract 78 from 120 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 11:
78 can be fit into 420 5 times, resulting in a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 12479.84615
Deduct 390 from 420 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 12:
78 can be fit into 300 3 times, resulting in a remainder of 66.
The number 3 becomes the next digit in our result. 
Result so far: 12479.846153
Deduct 234 from 300 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 13:
The number 78 fits into 660 8 times, leaving a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 12479.8461538
If we subtract 624 from 660, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 14:
When dividing 360 by 78, we get 4 with a remainder of 48.
Record the quotient 4 as the next digit in the result. 
Result so far: 12479.84615384
Deduct 312 from 360 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

After the division, we end up with 12479.84615384 and a remainder of 4.8e-08.