15206361 ÷ 215 
The aim is to understand the frequency of 215 in 15206361.

On to step 1:
If we divide 1 by 215, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 215

Step 2:
When dividing 15 by 215, we get 0 with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Fetch the next digit (2) from the dividend, attach it to 15 and continue: 152 / 215

Let's proceed to step 3:
When dividing 152 by 215, we get 0 with a remainder of 152.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 152 to get 152.
Include the next digit (0) from the dividend after 152, then repeat: 1520 / 215

Going ahead to step 4:
If we divide 1520 by 215, we get 7 and a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 1505 from 1520 leaves us with 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 215

Step 5:
215 can be fit into 156 0 times, resulting in a remainder of 156.
The next digit of our result is 0. 
Result so far: 70.0
Subtracting 0 from 156 leaves us with 156.
Take the next digit (3) from the dividend and append it to 156, then repeat: 1563 / 215

Moving on to step 6:
If we divide 1563 by 215, we get 7 and a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 707.0
The remainder is 58 after subtracting 1505 from 1563.
Append the next digit (6) from the dividend to 58 and continue with: 586 / 215

Moving on to step 7:
The number 215 fits into 586 2 times, leaving a remainder of 156.
Write down 2 as next digit of the result. 
Result so far: 7072.0
If we take 430 away from 586, we end up with 156.
Grab the next digit (1) from the dividend, add it to 156, then carry on: 1561 / 215

Moving on to step 8:
1561 divided by 215 is 7 with a remainder of 56.
Write down 7 as next digit of the result. 
Result so far: 70727.0
If we subtract 1505 from 1561, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 9:
560 divided by 215 is 2 with a remainder of 130.
The next digit of our result is 2. 
Result so far: 70727.2
Subtract 430 from 560 to get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Advancing to step 10:
215 can be fit into 1300 6 times, resulting in a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 70727.26
If we take 1290 away from 1300, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 11:
100 divided by 215 is 0 with a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 70727.26
Deduct 0 from 100 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 12:
1000 divided by 215 is 4 with a remainder of 140.
Use 4 as the next digit of our solution. 
Result so far: 70727.2604
Subtracting 860 from 1000 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 13:
If we divide 1400 by 215, we get 6 and a remainder of 110.
Put 6 as the next digit of the answer. 
Result so far: 70727.26046
Deduct 1290 from 1400 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 14:
1100 divided by 215 is 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 70727.260465
The remainder is 25 after subtracting 1075 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 15:
If we divide 250 by 215, we get 1 and a remainder of 35.
Use 1 as the next digit of our solution. 
Result so far: 70727.2604651
Subtracting 215 from 250 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 16:
When dividing 350 by 215, we get 1 with a remainder of 135.
Use 1 as the next digit of our solution. 
Result so far: 70727.26046511
Subtract 215 from 350 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Our division results in 70727.26046511 with a remaining 1.35e-07.