21017669 divided by 315 
The aim is to understand the frequency of 315 in 21017669.

Let's proceed to step 1:
315 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 315

Let's proceed to step 2:
315 goes into 21 0 times with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 315

Going ahead to step 3:
210 divided by 315 is 0 with a remainder of 210.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 210, we end up with 210.
Include the next digit (1) from the dividend after 210, then repeat: 2101 / 315

Moving on to step 4:
315 can be fit into 2101 6 times, resulting in a remainder of 211.
The next digit of our result is 6. 
Result so far: 6.0
The remainder is 211 after subtracting 1890 from 2101.
Fetch the next digit (7) from the dividend, attach it to 211 and continue: 2117 / 315

Moving on to step 5:
315 can be fit into 2117 6 times, resulting in a remainder of 227.
The next digit of our result is 6. 
Result so far: 66.0
If we take 1890 away from 2117, we end up with 227.
Fetch the next digit (6) from the dividend, attach it to 227 and continue: 2276 / 315

Let's proceed to step 6:
2276 divided by 315 is 7 with a remainder of 71.
Write down 7 as next digit of the result. 
Result so far: 667.0
If we subtract 2205 from 2276, we get 71.
Append the next digit (6) from the dividend to 71 and continue with: 716 / 315

Step 7:
If we divide 716 by 315, we get 2 and a remainder of 86.
The next digit of our result is 2. 
Result so far: 6672.0
Subtract 630 from 716 to get 86.
Take the next digit (9) from the dividend and append it to 86, then repeat: 869 / 315

Step 8:
869 divided by 315 is 2 with a remainder of 239.
The number 2 becomes the next digit in our result. 
Result so far: 66722.0
If we subtract 630 from 869, we get 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Moving on to step 9:
When dividing 2390 by 315, we get 7 with a remainder of 185.
Put 7 as the next digit of the answer. 
Result so far: 66722.7
If we subtract 2205 from 2390, we get 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Going ahead to step 10:
When dividing 1850 by 315, we get 5 with a remainder of 275.
Record the quotient 5 as the next digit in the result. 
Result so far: 66722.75
If we take 1575 away from 1850, we end up with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Moving on to step 11:
The number 315 fits into 2750 8 times, leaving a remainder of 230.
Record the quotient 8 as the next digit in the result. 
Result so far: 66722.758
If we take 2520 away from 2750, we end up with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 12:
The number 315 fits into 2300 7 times, leaving a remainder of 95.
Put 7 as the next digit of the answer. 
Result so far: 66722.7587
Subtract 2205 from 2300 to get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Moving on to step 13:
315 can be fit into 950 3 times, resulting in a remainder of 5.
The next digit of our result is 3. 
Result so far: 66722.75873
Deduct 945 from 950 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 14:
If we divide 50 by 315, we get 0 and a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 66722.75873
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 15:
When dividing 500 by 315, we get 1 with a remainder of 185.
Record the quotient 1 as the next digit in the result. 
Result so far: 66722.7587301
If we subtract 315 from 500, we get 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Advancing to step 16:
If we divide 1850 by 315, we get 5 and a remainder of 275.
Put 5 as the next digit of the answer. 
Result so far: 66722.75873015
Subtracting 1575 from 1850 leaves us with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

The final result is 66722.75873015 with a remainder of 2.75e-07.