Let's divide 80961313 by 217
The aim is to understand the frequency of 217 in 80961313.

On to step 1:
217 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 217

Going ahead to step 2:
217 goes into 80 0 times with a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 80 to get 80.
Fetch the next digit (9) from the dividend, attach it to 80 and continue: 809 / 217

Moving on to step 3:
217 can be fit into 809 3 times, resulting in a remainder of 158.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 158 after subtracting 651 from 809.
Grab the next digit (6) from the dividend, add it to 158, then carry on: 1586 / 217

Let's proceed to step 4:
217 goes into 1586 7 times with a remainder of 67.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
Subtract 1519 from 1586 to get 67.
Take the next digit (1) from the dividend and append it to 67, then repeat: 671 / 217

On to step 5:
671 divided by 217 is 3 with a remainder of 20.
Write down 3 as next digit of the result. 
Result so far: 373.0
The remainder is 20 after subtracting 651 from 671.
Fetch the next digit (3) from the dividend, attach it to 20 and continue: 203 / 217

Moving on to step 6:
203 divided by 217 is 0 with a remainder of 203.
Record the quotient 0 as the next digit in the result. 
Result so far: 3730.0
If we subtract 0 from 203, we get 203.
Bring next digit (1) of the dividend behind the 203 and repeat the process: 2031 / 217

Going ahead to step 7:
217 goes into 2031 9 times with a remainder of 78.
Write down 9 as next digit of the result. 
Result so far: 37309.0
Subtract 1953 from 2031 to get 78.
Bring next digit (3) of the dividend behind the 78 and repeat the process: 783 / 217

Step 8:
When dividing 783 by 217, we get 3 with a remainder of 132.
The next digit of our result is 3. 
Result so far: 373093.0
Deduct 651 from 783 and we're left with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

On to step 9:
If we divide 1320 by 217, we get 6 and a remainder of 18.
Use 6 as the next digit of our solution. 
Result so far: 373093.6
If we subtract 1302 from 1320, we 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.

Step 10:
The number 217 fits into 180 0 times, leaving a remainder of 180.
The number 0 becomes the next digit in our result. 
Result so far: 373093.6
If we take 0 away from 180, we end up with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 11:
When dividing 1800 by 217, we get 8 with a remainder of 64.
The next digit of our result is 8. 
Result so far: 373093.608
Subtracting 1736 from 1800 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 12:
217 goes into 640 2 times with a remainder of 206.
Write down 2 as next digit of the result. 
Result so far: 373093.6082
If we subtract 434 from 640, we get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

On to step 13:
217 can be fit into 2060 9 times, resulting in a remainder of 107.
Record the quotient 9 as the next digit in the result. 
Result so far: 373093.60829
Deduct 1953 from 2060 and we're left with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Advancing to step 14:
1070 divided by 217 is 4 with a remainder of 202.
Record the quotient 4 as the next digit in the result. 
Result so far: 373093.608294
Subtract 868 from 1070 to 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.

Step 15:
2020 divided by 217 is 9 with a remainder of 67.
The number 9 becomes the next digit in our result. 
Result so far: 373093.6082949
If we subtract 1953 from 2020, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 16:
When dividing 670 by 217, we get 3 with a remainder of 19.
The number 3 becomes the next digit in our result. 
Result so far: 373093.60829493
If we subtract 651 from 670, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

After the division, we end up with 373093.60829493 and a remainder of 1.9e-08.