81015155 ÷ 217 
The aim is to understand the frequency of 217 in 81015155.

Advancing to step 1:
217 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 217

Let's proceed to step 2:
81 divided by 217 is 0 with a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Append the next digit (0) from the dividend to 81 and continue with: 810 / 217

Step 3:
When dividing 810 by 217, we get 3 with a remainder of 159.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 651 from 810, we get 159.
Bring next digit (1) of the dividend behind the 159 and repeat the process: 1591 / 217

On to step 4:
1591 divided by 217 is 7 with a remainder of 72.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
Subtract 1519 from 1591 to get 72.
Fetch the next digit (5) from the dividend, attach it to 72 and continue: 725 / 217

Going ahead to step 5:
When dividing 725 by 217, we get 3 with a remainder of 74.
The next digit of our result is 3. 
Result so far: 373.0
Subtract 651 from 725 to get 74.
Fetch the next digit (1) from the dividend, attach it to 74 and continue: 741 / 217

Going ahead to step 6:
If we divide 741 by 217, we get 3 and a remainder of 90.
Record the quotient 3 as the next digit in the result. 
Result so far: 3733.0
Deduct 651 from 741 and we're left with 90.
Grab the next digit (5) from the dividend, add it to 90, then carry on: 905 / 217

Going ahead to step 7:
217 goes into 905 4 times with a remainder of 37.
The next digit of our result is 4. 
Result so far: 37334.0
If we take 868 away from 905, we end up with 37.
Fetch the next digit (5) from the dividend, attach it to 37 and continue: 375 / 217

Moving on to step 8:
217 goes into 375 1 times with a remainder of 158.
Use 1 as the next digit of our solution. 
Result so far: 373341.0
If we subtract 217 from 375, we get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Advancing to step 9:
217 can be fit into 1580 7 times, resulting in a remainder of 61.
Record the quotient 7 as the next digit in the result. 
Result so far: 373341.7
Subtract 1519 from 1580 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 10:
217 can be fit into 610 2 times, resulting in a remainder of 176.
Write down 2 as next digit of the result. 
Result so far: 373341.72
If we subtract 434 from 610, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

On to step 11:
The number 217 fits into 1760 8 times, leaving a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 373341.728
The remainder is 24 after subtracting 1736 from 1760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 12:
240 divided by 217 is 1 with a remainder of 23.
Record the quotient 1 as the next digit in the result. 
Result so far: 373341.7281
If we subtract 217 from 240, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 13:
217 goes into 230 1 times with a remainder of 13.
The next digit of our result is 1. 
Result so far: 373341.72811
Subtract 217 from 230 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The quotient of the division is 373341.72811, and the remainder is 1.3e-05.