We're dividing 72492213 by 215 
The aim is to understand the frequency of 215 in 72492213.

On to step 1:
The number 215 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 215

Let's proceed to step 2:
215 can be fit into 72 0 times, resulting in a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Fetch the next digit (4) from the dividend, attach it to 72 and continue: 724 / 215

Advancing to step 3:
When dividing 724 by 215, we get 3 with a remainder of 79.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 79 after subtracting 645 from 724.
Bring next digit (9) of the dividend behind the 79 and repeat the process: 799 / 215

Let's proceed to step 4:
When dividing 799 by 215, we get 3 with a remainder of 154.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
If we subtract 645 from 799, we get 154.
Append the next digit (2) from the dividend to 154 and continue with: 1542 / 215

Advancing to step 5:
215 can be fit into 1542 7 times, resulting in a remainder of 37.
The number 7 becomes the next digit in our result. 
Result so far: 337.0
Subtracting 1505 from 1542 leaves us with 37.
Fetch the next digit (2) from the dividend, attach it to 37 and continue: 372 / 215

Moving on to step 6:
215 goes into 372 1 times with a remainder of 157.
Use 1 as the next digit of our solution. 
Result so far: 3371.0
Deduct 215 from 372 and we're left with 157.
Include the next digit (1) from the dividend after 157, then repeat: 1571 / 215

Going ahead to step 7:
If we divide 1571 by 215, we get 7 and a remainder of 66.
Record the quotient 7 as the next digit in the result. 
Result so far: 33717.0
If we take 1505 away from 1571, we end up with 66.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 215

Let's proceed to step 8:
If we divide 663 by 215, we get 3 and a remainder of 18.
The next digit of our result is 3. 
Result so far: 337173.0
Subtract 645 from 663 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 9:
180 divided by 215 is 0 with a remainder of 180.
The number 0 becomes the next digit in our result. 
Result so far: 337173.0
Subtract 0 from 180 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 10:
1800 divided by 215 is 8 with a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 337173.08
If we take 1720 away from 1800, we end up 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.

Advancing to step 11:
800 divided by 215 is 3 with a remainder of 155.
Record the quotient 3 as the next digit in the result. 
Result so far: 337173.083
Deduct 645 from 800 and we're left with 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

On to step 12:
If we divide 1550 by 215, we get 7 and a remainder of 45.
Use 7 as the next digit of our solution. 
Result so far: 337173.0837
Subtracting 1505 from 1550 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 13:
450 divided by 215 is 2 with a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 337173.08372
Subtracting 430 from 450 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 14:
215 can be fit into 200 0 times, resulting in a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 337173.08372
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 15:
When dividing 2000 by 215, we get 9 with a remainder of 65.
The number 9 becomes the next digit in our result. 
Result so far: 337173.0837209
Subtract 1935 from 2000 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 16:
215 goes into 650 3 times with a remainder of 5.
The next digit of our result is 3. 
Result so far: 337173.08372093
If we subtract 645 from 650, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 337173.08372093 with a remaining 5e-09.