We look at the division of 55679021 by 615 
The aim is to understand the frequency of 615 in 55679021.

Step 1:
When dividing 5 by 615, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 615

Step 2:
When dividing 55 by 615, we get 0 with a remainder of 55.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 55 after subtracting 0 from 55.
Take the next digit (6) from the dividend and append it to 55, then repeat: 556 / 615

Going ahead to step 3:
556 divided by 615 is 0 with a remainder of 556.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 556 after subtracting 0 from 556.
Bring next digit (7) of the dividend behind the 556 and repeat the process: 5567 / 615

On to step 4:
5567 divided by 615 is 9 with a remainder of 32.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
The remainder is 32 after subtracting 5535 from 5567.
Take the next digit (9) from the dividend and append it to 32, then repeat: 329 / 615

Advancing to step 5:
If we divide 329 by 615, we get 0 and a remainder of 329.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
Subtract 0 from 329 to get 329.
Fetch the next digit (0) from the dividend, attach it to 329 and continue: 3290 / 615

Moving on to step 6:
3290 divided by 615 is 5 with a remainder of 215.
The number 5 becomes the next digit in our result. 
Result so far: 905.0
Subtract 3075 from 3290 to get 215.
Grab the next digit (2) from the dividend, add it to 215, then carry on: 2152 / 615

Advancing to step 7:
The number 615 fits into 2152 3 times, leaving a remainder of 307.
Write down 3 as next digit of the result. 
Result so far: 9053.0
The remainder is 307 after subtracting 1845 from 2152.
Grab the next digit (1) from the dividend, add it to 307, then carry on: 3071 / 615

Moving on to step 8:
If we divide 3071 by 615, we get 4 and a remainder of 611.
Write down 4 as next digit of the result. 
Result so far: 90534.0
The remainder is 611 after subtracting 2460 from 3071.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6110, and continue the process.

Advancing to step 9:
615 goes into 6110 9 times with a remainder of 575.
Record the quotient 9 as the next digit in the result. 
Result so far: 90534.9
The remainder is 575 after subtracting 5535 from 6110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Let's proceed to step 10:
When dividing 5750 by 615, we get 9 with a remainder of 215.
Use 9 as the next digit of our solution. 
Result so far: 90534.99
Subtracting 5535 from 5750 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

In conclusion, the division gives 90534.99 with a balance of 0.215.