We look at the division of 93980309 by 15 
We want to figure out the number of times 93980309 can be divided by 15.

Advancing to step 1:
15 goes into 9 0 times with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (3) of the dividend behind the 9 and repeat the process: 93 / 15

Moving on to step 2:
The number 15 fits into 93 6 times, leaving a remainder of 3.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtract 90 from 93 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 15

Moving on to step 3:
15 goes into 39 2 times with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 62.0
If we take 30 away from 39, we end up with 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 15

Let's proceed to step 4:
15 goes into 98 6 times with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 626.0
Subtract 90 from 98 to get 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 15

Let's proceed to step 5:
The number 15 fits into 80 5 times, leaving a remainder of 5.
The next digit of our result is 5. 
Result so far: 6265.0
If we subtract 75 from 80, we get 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 15

Step 6:
15 can be fit into 53 3 times, resulting in a remainder of 8.
Put 3 as the next digit of the answer. 
Result so far: 62653.0
Subtracting 45 from 53 leaves us with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 15

On to step 7:
If we divide 80 by 15, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 626535.0
If we take 75 away from 80, we end up with 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 15

On to step 8:
15 can be fit into 59 3 times, resulting in a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 6265353.0
Subtracting 45 from 59 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 9:
15 goes into 140 9 times with a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 6265353.9
The remainder is 5 after subtracting 135 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 10:
If we divide 50 by 15, we get 3 and a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 6265353.93
Subtracting 45 from 50 leaves us 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.

Step 11:
If we divide 50 by 15, we get 3 and a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 6265353.933
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 6265353.933 and a remainder of 0.0005.