We're dividing 7278520 by 684 
The aim is to understand the frequency of 684 in 7278520.

Step 1:
The number 684 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 684

Moving on to step 2:
When dividing 72 by 684, we get 0 with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 72 to get 72.
Bring next digit (7) of the dividend behind the 72 and repeat the process: 727 / 684

Let's proceed to step 3:
When dividing 727 by 684, we get 1 with a remainder of 43.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 684 from 727, we get 43.
Fetch the next digit (8) from the dividend, attach it to 43 and continue: 438 / 684

Step 4:
When dividing 438 by 684, we get 0 with a remainder of 438.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 438 to get 438.
Include the next digit (5) from the dividend after 438, then repeat: 4385 / 684

Advancing to step 5:
684 can be fit into 4385 6 times, resulting in a remainder of 281.
Use 6 as the next digit of our solution. 
Result so far: 106.0
If we subtract 4104 from 4385, we get 281.
Append the next digit (2) from the dividend to 281 and continue with: 2812 / 684

Advancing to step 6:
The number 684 fits into 2812 4 times, leaving a remainder of 76.
Write down 4 as next digit of the result. 
Result so far: 1064.0
Subtracting 2736 from 2812 leaves us with 76.
Grab the next digit (0) from the dividend, add it to 76, then carry on: 760 / 684

Moving on to step 7:
684 can be fit into 760 1 times, resulting in a remainder of 76.
Put 1 as the next digit of the answer. 
Result so far: 10641.0
The remainder is 76 after subtracting 684 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 8:
When dividing 760 by 684, we get 1 with a remainder of 76.
Use 1 as the next digit of our solution. 
Result so far: 10641.1
The remainder is 76 after subtracting 684 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 9:
760 divided by 684 is 1 with a remainder of 76.
Put 1 as the next digit of the answer. 
Result so far: 10641.11
Deduct 684 from 760 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

In conclusion, the division gives 10641.11 with a balance of 0.076.