We look at the division of 16409594 by 603 
We're looking to find how many times 603 goes into 16409594.

Let's proceed to step 1:
If we divide 1 by 603, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 603

Moving on to step 2:
When dividing 16 by 603, we get 0 with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Take the next digit (4) from the dividend and append it to 16, then repeat: 164 / 603

On to step 3:
164 divided by 603 is 0 with a remainder of 164.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 164, we get 164.
Fetch the next digit (0) from the dividend, attach it to 164 and continue: 1640 / 603

Going ahead to step 4:
603 can be fit into 1640 2 times, resulting in a remainder of 434.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 1206 from 1640, we get 434.
Include the next digit (9) from the dividend after 434, then repeat: 4349 / 603

Going ahead to step 5:
If we divide 4349 by 603, we get 7 and a remainder of 128.
Put 7 as the next digit of the answer. 
Result so far: 27.0
Subtract 4221 from 4349 to get 128.
Fetch the next digit (5) from the dividend, attach it to 128 and continue: 1285 / 603

Let's proceed to step 6:
603 can be fit into 1285 2 times, resulting in a remainder of 79.
Use 2 as the next digit of our solution. 
Result so far: 272.0
If we subtract 1206 from 1285, we get 79.
Include the next digit (9) from the dividend after 79, then repeat: 799 / 603

Moving on to step 7:
When dividing 799 by 603, we get 1 with a remainder of 196.
Record the quotient 1 as the next digit in the result. 
Result so far: 2721.0
Subtracting 603 from 799 leaves us with 196.
Grab the next digit (4) from the dividend, add it to 196, then carry on: 1964 / 603

Moving on to step 8:
When dividing 1964 by 603, we get 3 with a remainder of 155.
Record the quotient 3 as the next digit in the result. 
Result so far: 27213.0
Subtract 1809 from 1964 to get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Moving on to step 9:
If we divide 1550 by 603, we get 2 and a remainder of 344.
The number 2 becomes the next digit in our result. 
Result so far: 27213.2
If we subtract 1206 from 1550, we get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

On to step 10:
The number 603 fits into 3440 5 times, leaving a remainder of 425.
Put 5 as the next digit of the answer. 
Result so far: 27213.25
Subtract 3015 from 3440 to get 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Going ahead to step 11:
If we divide 4250 by 603, we get 7 and a remainder of 29.
Use 7 as the next digit of our solution. 
Result so far: 27213.257
Deduct 4221 from 4250 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 12:
603 goes into 290 0 times with a remainder of 290.
Record the quotient 0 as the next digit in the result. 
Result so far: 27213.257
Subtracting 0 from 290 leaves us with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Moving on to step 13:
603 goes into 2900 4 times with a remainder of 488.
Put 4 as the next digit of the answer. 
Result so far: 27213.25704
The remainder is 488 after subtracting 2412 from 2900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Advancing to step 14:
The number 603 fits into 4880 8 times, leaving a remainder of 56.
Put 8 as the next digit of the answer. 
Result so far: 27213.257048
Deduct 4824 from 4880 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 15:
603 goes into 560 0 times with a remainder of 560.
Write down 0 as next digit of the result. 
Result so far: 27213.257048
If we subtract 0 from 560, we get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Step 16:
603 can be fit into 5600 9 times, resulting in a remainder of 173.
Put 9 as the next digit of the answer. 
Result so far: 27213.25704809
If we take 5427 away from 5600, we end up with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

The final outcome is 27213.25704809, with a leftover of 1.73e-07.