We look at the division of 9161509 by 399 
We want to divide 9161509 by 399.

Moving on to step 1:
399 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 399

Step 2:
399 can be fit into 91 0 times, resulting in a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 91 and we're left with 91.
Take the next digit (6) from the dividend and append it to 91, then repeat: 916 / 399

Moving on to step 3:
The number 399 fits into 916 2 times, leaving a remainder of 118.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 798 from 916 and we're left with 118.
Bring next digit (1) of the dividend behind the 118 and repeat the process: 1181 / 399

Advancing to step 4:
399 goes into 1181 2 times with a remainder of 383.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
The remainder is 383 after subtracting 798 from 1181.
Append the next digit (5) from the dividend to 383 and continue with: 3835 / 399

Step 5:
399 can be fit into 3835 9 times, resulting in a remainder of 244.
Record the quotient 9 as the next digit in the result. 
Result so far: 229.0
Subtracting 3591 from 3835 leaves us with 244.
Take the next digit (0) from the dividend and append it to 244, then repeat: 2440 / 399

Step 6:
399 goes into 2440 6 times with a remainder of 46.
The number 6 becomes the next digit in our result. 
Result so far: 2296.0
If we subtract 2394 from 2440, we get 46.
Include the next digit (9) from the dividend after 46, then repeat: 469 / 399

Step 7:
469 divided by 399 is 1 with a remainder of 70.
Use 1 as the next digit of our solution. 
Result so far: 22961.0
Subtract 399 from 469 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 8:
700 divided by 399 is 1 with a remainder of 301.
The next digit of our result is 1. 
Result so far: 22961.1
If we subtract 399 from 700, we get 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

Advancing to step 9:
If we divide 3010 by 399, we get 7 and a remainder of 217.
The next digit of our result is 7. 
Result so far: 22961.17
Deduct 2793 from 3010 and we're left with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Going ahead to step 10:
399 goes into 2170 5 times with a remainder of 175.
Write down 5 as next digit of the result. 
Result so far: 22961.175
Subtract 1995 from 2170 to get 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Let's proceed to step 11:
1750 divided by 399 is 4 with a remainder of 154.
Use 4 as the next digit of our solution. 
Result so far: 22961.1754
Subtract 1596 from 1750 to get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Let's proceed to step 12:
If we divide 1540 by 399, we get 3 and a remainder of 343.
The number 3 becomes the next digit in our result. 
Result so far: 22961.17543
Subtract 1197 from 1540 to get 343.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3430, and continue the process.

Advancing to step 13:
399 goes into 3430 8 times with a remainder of 238.
Put 8 as the next digit of the answer. 
Result so far: 22961.175438
The remainder is 238 after subtracting 3192 from 3430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Going ahead to step 14:
2380 divided by 399 is 5 with a remainder of 385.
Put 5 as the next digit of the answer. 
Result so far: 22961.1754385
The remainder is 385 after subtracting 1995 from 2380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Let's proceed to step 15:
When dividing 3850 by 399, we get 9 with a remainder of 259.
Write down 9 as next digit of the result. 
Result so far: 22961.17543859
Deduct 3591 from 3850 and we're left with 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

The final outcome is 22961.17543859, with a leftover of 2.59e-07.