We look at the division of 82990464 by 215 
The aim is to understand the frequency of 215 in 82990464.

Let's proceed to step 1:
If we divide 8 by 215, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 215

Advancing to step 2:
The number 215 fits into 82 0 times, leaving a remainder of 82.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 82 leaves us with 82.
Append the next digit (9) from the dividend to 82 and continue with: 829 / 215

Advancing to step 3:
When dividing 829 by 215, we get 3 with a remainder of 184.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 645 away from 829, we end up with 184.
Take the next digit (9) from the dividend and append it to 184, then repeat: 1849 / 215

On to step 4:
1849 divided by 215 is 8 with a remainder of 129.
Write down 8 as next digit of the result. 
Result so far: 38.0
Subtracting 1720 from 1849 leaves us with 129.
Bring next digit (0) of the dividend behind the 129 and repeat the process: 1290 / 215

Moving on to step 5:
The number 215 fits into 1290 6 times, leaving a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 386.0
If we subtract 1290 from 1290, we get 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 215

On to step 6:
215 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 3860.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (6) of the dividend behind the 4 and repeat the process: 46 / 215

Going ahead to step 7:
If we divide 46 by 215, we get 0 and a remainder of 46.
The next digit of our result is 0. 
Result so far: 38600.0
Subtract 0 from 46 to get 46.
Append the next digit (4) from the dividend to 46 and continue with: 464 / 215

Advancing to step 8:
If we divide 464 by 215, we get 2 and a remainder of 34.
Use 2 as the next digit of our solution. 
Result so far: 386002.0
If we subtract 430 from 464, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 9:
215 goes into 340 1 times with a remainder of 125.
The next digit of our result is 1. 
Result so far: 386002.1
Deduct 215 from 340 and we're left with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

On to step 10:
When dividing 1250 by 215, we get 5 with a remainder of 175.
The number 5 becomes the next digit in our result. 
Result so far: 386002.15
If we take 1075 away from 1250, we end up with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Advancing to step 11:
The number 215 fits into 1750 8 times, leaving a remainder of 30.
Put 8 as the next digit of the answer. 
Result so far: 386002.158
Subtract 1720 from 1750 to get 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:
The number 215 fits into 300 1 times, leaving a remainder of 85.
Write down 1 as next digit of the result. 
Result so far: 386002.1581
Subtracting 215 from 300 leaves us 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.

On to step 13:
The number 215 fits into 850 3 times, leaving a remainder of 205.
Record the quotient 3 as the next digit in the result. 
Result so far: 386002.15813
Subtracting 645 from 850 leaves us with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

On to step 14:
215 goes into 2050 9 times with a remainder of 115.
Record the quotient 9 as the next digit in the result. 
Result so far: 386002.158139
If we subtract 1935 from 2050, we get 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

On to step 15:
The number 215 fits into 1150 5 times, leaving a remainder of 75.
The next digit of our result is 5. 
Result so far: 386002.1581395
Deduct 1075 from 1150 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 16:
The number 215 fits into 750 3 times, leaving a remainder of 105.
Put 3 as the next digit of the answer. 
Result so far: 386002.15813953
Deduct 645 from 750 and we're left 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.

The final outcome is 386002.15813953, with a leftover of 1.05e-07.