21171842 ÷ 217 
The aim is to understand the frequency of 217 in 21171842.

Going ahead to step 1:
217 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 217

On to step 2:
The number 217 fits into 21 0 times, leaving a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Fetch the next digit (1) from the dividend, attach it to 21 and continue: 211 / 217

On to step 3:
When dividing 211 by 217, we get 0 with a remainder of 211.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 211 after subtracting 0 from 211.
Fetch the next digit (7) from the dividend, attach it to 211 and continue: 2117 / 217

On to step 4:
217 goes into 2117 9 times with a remainder of 164.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtracting 1953 from 2117 leaves us with 164.
Take the next digit (1) from the dividend and append it to 164, then repeat: 1641 / 217

Step 5:
If we divide 1641 by 217, we get 7 and a remainder of 122.
Put 7 as the next digit of the answer. 
Result so far: 97.0
If we subtract 1519 from 1641, we get 122.
Take the next digit (8) from the dividend and append it to 122, then repeat: 1228 / 217

On to step 6:
If we divide 1228 by 217, we get 5 and a remainder of 143.
Write down 5 as next digit of the result. 
Result so far: 975.0
If we take 1085 away from 1228, we end up with 143.
Fetch the next digit (4) from the dividend, attach it to 143 and continue: 1434 / 217

Advancing to step 7:
217 can be fit into 1434 6 times, resulting in a remainder of 132.
The number 6 becomes the next digit in our result. 
Result so far: 9756.0
Deduct 1302 from 1434 and we're left with 132.
Take the next digit (2) from the dividend and append it to 132, then repeat: 1322 / 217

Moving on to step 8:
If we divide 1322 by 217, we get 6 and a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 97566.0
Deduct 1302 from 1322 and we're left 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.

On to step 9:
200 divided by 217 is 0 with a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 97566.0
If we take 0 away from 200, we end up 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 10:
When dividing 2000 by 217, we get 9 with a remainder of 47.
Use 9 as the next digit of our solution. 
Result so far: 97566.09
The remainder is 47 after subtracting 1953 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 11:
If we divide 470 by 217, we get 2 and a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 97566.092
Subtract 434 from 470 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 12:
If we divide 360 by 217, we get 1 and a remainder of 143.
The next digit of our result is 1. 
Result so far: 97566.0921
If we subtract 217 from 360, we get 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Advancing to step 13:
If we divide 1430 by 217, we get 6 and a remainder of 128.
Write down 6 as next digit of the result. 
Result so far: 97566.09216
Subtract 1302 from 1430 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Step 14:
217 goes into 1280 5 times with a remainder of 195.
The number 5 becomes the next digit in our result. 
Result so far: 97566.092165
Deduct 1085 from 1280 and we're left with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

On to step 15:
When dividing 1950 by 217, we get 8 with a remainder of 214.
The number 8 becomes the next digit in our result. 
Result so far: 97566.0921658
The remainder is 214 after subtracting 1736 from 1950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

On to step 16:
When dividing 2140 by 217, we get 9 with a remainder of 187.
Write down 9 as next digit of the result. 
Result so far: 97566.09216589
The remainder is 187 after subtracting 1953 from 2140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

The final outcome is 97566.09216589, with a leftover of 1.87e-07.