We're dividing 55293687 by 215 
The aim is to understand the frequency of 215 in 55293687.

On to step 1:
When dividing 5 by 215, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 215

Step 2:
215 goes into 55 0 times with a remainder of 55.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 55 leaves us with 55.
Take the next digit (2) from the dividend and append it to 55, then repeat: 552 / 215

Moving on to step 3:
When dividing 552 by 215, we get 2 with a remainder of 122.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 430 away from 552, we end up with 122.
Append the next digit (9) from the dividend to 122 and continue with: 1229 / 215

Let's proceed to step 4:
The number 215 fits into 1229 5 times, leaving a remainder of 154.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Subtract 1075 from 1229 to get 154.
Grab the next digit (3) from the dividend, add it to 154, then carry on: 1543 / 215

Advancing to step 5:
The number 215 fits into 1543 7 times, leaving a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 257.0
Deduct 1505 from 1543 and we're left with 38.
Fetch the next digit (6) from the dividend, attach it to 38 and continue: 386 / 215

On to step 6:
386 divided by 215 is 1 with a remainder of 171.
Record the quotient 1 as the next digit in the result. 
Result so far: 2571.0
Deduct 215 from 386 and we're left with 171.
Append the next digit (8) from the dividend to 171 and continue with: 1718 / 215

Step 7:
When dividing 1718 by 215, we get 7 with a remainder of 213.
Put 7 as the next digit of the answer. 
Result so far: 25717.0
If we subtract 1505 from 1718, we get 213.
Fetch the next digit (7) from the dividend, attach it to 213 and continue: 2137 / 215

On to step 8:
The number 215 fits into 2137 9 times, leaving a remainder of 202.
Write down 9 as next digit of the result. 
Result so far: 257179.0
If we subtract 1935 from 2137, we get 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

On to step 9:
If we divide 2020 by 215, we get 9 and a remainder of 85.
Record the quotient 9 as the next digit in the result. 
Result so far: 257179.9
Deduct 1935 from 2020 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Let's proceed to step 10:
When dividing 850 by 215, we get 3 with a remainder of 205.
The number 3 becomes the next digit in our result. 
Result so far: 257179.93
The remainder is 205 after subtracting 645 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Let's proceed to step 11:
215 can be fit into 2050 9 times, resulting in a remainder of 115.
The number 9 becomes the next digit in our result. 
Result so far: 257179.939
The remainder is 115 after subtracting 1935 from 2050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Advancing to step 12:
The number 215 fits into 1150 5 times, leaving a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 257179.9395
Subtract 1075 from 1150 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 13:
750 divided by 215 is 3 with a remainder of 105.
Record the quotient 3 as the next digit in the result. 
Result so far: 257179.93953
Subtracting 645 from 750 leaves us with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Moving on to step 14:
When dividing 1050 by 215, we get 4 with a remainder of 190.
Record the quotient 4 as the next digit in the result. 
Result so far: 257179.939534
The remainder is 190 after subtracting 860 from 1050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Step 15:
1900 divided by 215 is 8 with a remainder of 180.
Record the quotient 8 as the next digit in the result. 
Result so far: 257179.9395348
The remainder is 180 after subtracting 1720 from 1900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Moving on to step 16:
215 can be fit into 1800 8 times, resulting in a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 257179.93953488
Subtracting 1720 from 1800 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

In conclusion, the division gives 257179.93953488 with a balance of 8e-08.