We're dividing 750374 by 78 
The aim is to understand the frequency of 78 in 750374.

On to step 1:
78 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 78

Moving on to step 2:
If we divide 75 by 78, we get 0 and a remainder of 75.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 75 and we're left with 75.
Fetch the next digit (0) from the dividend, attach it to 75 and continue: 750 / 78

Going ahead to step 3:
750 divided by 78 is 9 with a remainder of 48.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 702 from 750 to get 48.
Grab the next digit (3) from the dividend, add it to 48, then carry on: 483 / 78

Step 4:
78 goes into 483 6 times with a remainder of 15.
Put 6 as the next digit of the answer. 
Result so far: 96.0
If we subtract 468 from 483, we get 15.
Grab the next digit (7) from the dividend, add it to 15, then carry on: 157 / 78

Let's proceed to step 5:
If we divide 157 by 78, we get 2 and a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 962.0
Subtracting 156 from 157 leaves us with 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 78

Moving on to step 6:
78 can be fit into 14 0 times, resulting in a remainder of 14.
Record the quotient 0 as the next digit in the result. 
Result so far: 9620.0
If we subtract 0 from 14, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
When dividing 140 by 78, we get 1 with a remainder of 62.
The next digit of our result is 1. 
Result so far: 9620.1
If we take 78 away from 140, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 8:
620 divided by 78 is 7 with a remainder of 74.
Write down 7 as next digit of the result. 
Result so far: 9620.17
If we subtract 546 from 620, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 9:
78 can be fit into 740 9 times, resulting in a remainder of 38.
Put 9 as the next digit of the answer. 
Result so far: 9620.179
The remainder is 38 after subtracting 702 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 10:
When dividing 380 by 78, we get 4 with a remainder of 68.
Use 4 as the next digit of our solution. 
Result so far: 9620.1794
The remainder is 68 after subtracting 312 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 11:
If we divide 680 by 78, we get 8 and a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 9620.17948
Subtracting 624 from 680 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 12:
78 goes into 560 7 times with a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 9620.179487
The remainder is 14 after subtracting 546 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 13:
78 goes into 140 1 times with a remainder of 62.
Use 1 as the next digit of our solution. 
Result so far: 9620.1794871
If we take 78 away from 140, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 14:
620 divided by 78 is 7 with a remainder of 74.
Use 7 as the next digit of our solution. 
Result so far: 9620.17948717
Deduct 546 from 620 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

The final outcome is 9620.17948717, with a leftover of 7.4e-08.