12845493 ÷ 603 
We want to divide 12845493 by 603.

On to step 1:
603 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 603

Let's proceed to step 2:
603 can be fit into 12 0 times, resulting in a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 603

Going ahead to step 3:
603 can be fit into 128 0 times, resulting in a remainder of 128.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 128, we end up with 128.
Fetch the next digit (4) from the dividend, attach it to 128 and continue: 1284 / 603

Moving on to step 4:
1284 divided by 603 is 2 with a remainder of 78.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 1206 from 1284 to get 78.
Append the next digit (5) from the dividend to 78 and continue with: 785 / 603

Moving on to step 5:
785 divided by 603 is 1 with a remainder of 182.
The next digit of our result is 1. 
Result so far: 21.0
Deduct 603 from 785 and we're left with 182.
Append the next digit (4) from the dividend to 182 and continue with: 1824 / 603

Let's proceed to step 6:
1824 divided by 603 is 3 with a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 213.0
Deduct 1809 from 1824 and we're left with 15.
Include the next digit (9) from the dividend after 15, then repeat: 159 / 603

On to step 7:
The number 603 fits into 159 0 times, leaving a remainder of 159.
The number 0 becomes the next digit in our result. 
Result so far: 2130.0
If we subtract 0 from 159, we get 159.
Append the next digit (3) from the dividend to 159 and continue with: 1593 / 603

Step 8:
1593 divided by 603 is 2 with a remainder of 387.
Write down 2 as next digit of the result. 
Result so far: 21302.0
Subtracting 1206 from 1593 leaves us with 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Advancing to step 9:
If we divide 3870 by 603, we get 6 and a remainder of 252.
Put 6 as the next digit of the answer. 
Result so far: 21302.6
Deduct 3618 from 3870 and we're left with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Moving on to step 10:
603 goes into 2520 4 times with a remainder of 108.
Put 4 as the next digit of the answer. 
Result so far: 21302.64
If we subtract 2412 from 2520, we get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

On to step 11:
If we divide 1080 by 603, we get 1 and a remainder of 477.
The next digit of our result is 1. 
Result so far: 21302.641
If we subtract 603 from 1080, we get 477.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

Moving on to step 12:
When dividing 4770 by 603, we get 7 with a remainder of 549.
Write down 7 as next digit of the result. 
Result so far: 21302.6417
If we subtract 4221 from 4770, we get 549.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5490, and continue the process.

Advancing to step 13:
5490 divided by 603 is 9 with a remainder of 63.
Record the quotient 9 as the next digit in the result. 
Result so far: 21302.64179
The remainder is 63 after subtracting 5427 from 5490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Going ahead to step 14:
603 can be fit into 630 1 times, resulting in a remainder of 27.
Use 1 as the next digit of our solution. 
Result so far: 21302.641791
Deduct 603 from 630 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 15:
The number 603 fits into 270 0 times, leaving a remainder of 270.
The next digit of our result is 0. 
Result so far: 21302.641791
Subtract 0 from 270 to get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 16:
603 can be fit into 2700 4 times, resulting in a remainder of 288.
Use 4 as the next digit of our solution. 
Result so far: 21302.64179104
If we take 2412 away from 2700, we end up with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

After the division, we end up with 21302.64179104 and a remainder of 2.88e-07.