15691380 ÷ 315 
The aim is to understand the frequency of 315 in 15691380.

On to step 1:
The number 315 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 315

Moving on to step 2:
315 goes into 15 0 times with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 315

Let's proceed to step 3:
The number 315 fits into 156 0 times, leaving a remainder of 156.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 156 leaves us with 156.
Take the next digit (9) from the dividend and append it to 156, then repeat: 1569 / 315

Moving on to step 4:
1569 divided by 315 is 4 with a remainder of 309.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 1260 from 1569 to get 309.
Fetch the next digit (1) from the dividend, attach it to 309 and continue: 3091 / 315

On to step 5:
315 goes into 3091 9 times with a remainder of 256.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
The remainder is 256 after subtracting 2835 from 3091.
Fetch the next digit (3) from the dividend, attach it to 256 and continue: 2563 / 315

Going ahead to step 6:
The number 315 fits into 2563 8 times, leaving a remainder of 43.
The next digit of our result is 8. 
Result so far: 498.0
Deduct 2520 from 2563 and we're left with 43.
Take the next digit (8) from the dividend and append it to 43, then repeat: 438 / 315

On to step 7:
315 goes into 438 1 times with a remainder of 123.
Put 1 as the next digit of the answer. 
Result so far: 4981.0
Subtract 315 from 438 to get 123.
Fetch the next digit (0) from the dividend, attach it to 123 and continue: 1230 / 315

Step 8:
If we divide 1230 by 315, we get 3 and a remainder of 285.
The number 3 becomes the next digit in our result. 
Result so far: 49813.0
The remainder is 285 after subtracting 945 from 1230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Moving on to step 9:
315 can be fit into 2850 9 times, resulting in a remainder of 15.
The next digit of our result is 9. 
Result so far: 49813.9
The remainder is 15 after subtracting 2835 from 2850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 10:
If we divide 150 by 315, we get 0 and a remainder of 150.
Put 0 as the next digit of the answer. 
Result so far: 49813.9
If we take 0 away from 150, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 11:
If we divide 1500 by 315, we get 4 and a remainder of 240.
The next digit of our result is 4. 
Result so far: 49813.904
If we take 1260 away from 1500, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 12:
315 goes into 2400 7 times with a remainder of 195.
The number 7 becomes the next digit in our result. 
Result so far: 49813.9047
The remainder is 195 after subtracting 2205 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 13:
315 goes into 1950 6 times with a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 49813.90476
If we take 1890 away from 1950, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
315 can be fit into 600 1 times, resulting in a remainder of 285.
The next digit of our result is 1. 
Result so far: 49813.904761
If we subtract 315 from 600, we get 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Let's proceed to step 15:
If we divide 2850 by 315, we get 9 and a remainder of 15.
Use 9 as the next digit of our solution. 
Result so far: 49813.9047619
If we subtract 2835 from 2850, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 16:
When dividing 150 by 315, we get 0 with a remainder of 150.
Record the quotient 0 as the next digit in the result. 
Result so far: 49813.9047619
Subtract 0 from 150 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

The final outcome is 49813.9047619, with a leftover of 1.5e-07.