16907309 ÷ 315 
The aim is to understand the frequency of 315 in 16907309.

Advancing to step 1:
When dividing 1 by 315, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 315

Step 2:
The number 315 fits into 16 0 times, leaving a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Bring next digit (9) of the dividend behind the 16 and repeat the process: 169 / 315

Going ahead to step 3:
315 can be fit into 169 0 times, resulting in a remainder of 169.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 169 and we're left with 169.
Bring next digit (0) of the dividend behind the 169 and repeat the process: 1690 / 315

Advancing to step 4:
When dividing 1690 by 315, we get 5 with a remainder of 115.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 1575 from 1690 and we're left with 115.
Include the next digit (7) from the dividend after 115, then repeat: 1157 / 315

Let's proceed to step 5:
The number 315 fits into 1157 3 times, leaving a remainder of 212.
Record the quotient 3 as the next digit in the result. 
Result so far: 53.0
If we subtract 945 from 1157, we get 212.
Bring next digit (3) of the dividend behind the 212 and repeat the process: 2123 / 315

Going ahead to step 6:
If we divide 2123 by 315, we get 6 and a remainder of 233.
Put 6 as the next digit of the answer. 
Result so far: 536.0
The remainder is 233 after subtracting 1890 from 2123.
Append the next digit (0) from the dividend to 233 and continue with: 2330 / 315

Advancing to step 7:
315 can be fit into 2330 7 times, resulting in a remainder of 125.
The number 7 becomes the next digit in our result. 
Result so far: 5367.0
If we take 2205 away from 2330, we end up with 125.
Fetch the next digit (9) from the dividend, attach it to 125 and continue: 1259 / 315

On to step 8:
315 goes into 1259 3 times with a remainder of 314.
Use 3 as the next digit of our solution. 
Result so far: 53673.0
Subtracting 945 from 1259 leaves us with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Moving on to step 9:
315 can be fit into 3140 9 times, resulting in a remainder of 305.
Write down 9 as next digit of the result. 
Result so far: 53673.9
Subtracting 2835 from 3140 leaves us with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Step 10:
315 can be fit into 3050 9 times, resulting in a remainder of 215.
Use 9 as the next digit of our solution. 
Result so far: 53673.99
Subtracting 2835 from 3050 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

The final outcome is 53673.99, with a leftover of 0.215.