99214321 divided by 603 
Our goal is to divide 99214321 by 603.

Step 1:
9 divided by 603 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 603

On to step 2:
If we divide 99 by 603, we get 0 and a remainder of 99.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Take the next digit (2) from the dividend and append it to 99, then repeat: 992 / 603

Let's proceed to step 3:
603 can be fit into 992 1 times, resulting in a remainder of 389.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 389 after subtracting 603 from 992.
Include the next digit (1) from the dividend after 389, then repeat: 3891 / 603

Going ahead to step 4:
603 goes into 3891 6 times with a remainder of 273.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Subtract 3618 from 3891 to get 273.
Append the next digit (4) from the dividend to 273 and continue with: 2734 / 603

Going ahead to step 5:
If we divide 2734 by 603, we get 4 and a remainder of 322.
The number 4 becomes the next digit in our result. 
Result so far: 164.0
The remainder is 322 after subtracting 2412 from 2734.
Grab the next digit (3) from the dividend, add it to 322, then carry on: 3223 / 603

Step 6:
3223 divided by 603 is 5 with a remainder of 208.
Record the quotient 5 as the next digit in the result. 
Result so far: 1645.0
Subtract 3015 from 3223 to get 208.
Bring next digit (2) of the dividend behind the 208 and repeat the process: 2082 / 603

Advancing to step 7:
2082 divided by 603 is 3 with a remainder of 273.
The next digit of our result is 3. 
Result so far: 16453.0
If we take 1809 away from 2082, we end up with 273.
Fetch the next digit (1) from the dividend, attach it to 273 and continue: 2731 / 603

Moving on to step 8:
If we divide 2731 by 603, we get 4 and a remainder of 319.
Use 4 as the next digit of our solution. 
Result so far: 164534.0
Subtract 2412 from 2731 to get 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Moving on to step 9:
603 can be fit into 3190 5 times, resulting in a remainder of 175.
The number 5 becomes the next digit in our result. 
Result so far: 164534.5
If we subtract 3015 from 3190, we 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 10:
1750 divided by 603 is 2 with a remainder of 544.
Use 2 as the next digit of our solution. 
Result so far: 164534.52
If we take 1206 away from 1750, we end up with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Advancing to step 11:
603 goes into 5440 9 times with a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 164534.529
The remainder is 13 after subtracting 5427 from 5440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 12:
If we divide 130 by 603, we get 0 and a remainder of 130.
Put 0 as the next digit of the answer. 
Result so far: 164534.529
Deduct 0 from 130 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 13:
1300 divided by 603 is 2 with a remainder of 94.
Write down 2 as next digit of the result. 
Result so far: 164534.52902
The remainder is 94 after subtracting 1206 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Moving on to step 14:
If we divide 940 by 603, we get 1 and a remainder of 337.
Use 1 as the next digit of our solution. 
Result so far: 164534.529021
The remainder is 337 after subtracting 603 from 940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Let's proceed to step 15:
If we divide 3370 by 603, we get 5 and a remainder of 355.
Put 5 as the next digit of the answer. 
Result so far: 164534.5290215
Subtracting 3015 from 3370 leaves us with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Moving on to step 16:
The number 603 fits into 3550 5 times, leaving a remainder of 535.
Put 5 as the next digit of the answer. 
Result so far: 164534.52902155
If we take 3015 away from 3550, we end up with 535.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

The final outcome is 164534.52902155, with a leftover of 5.35e-07.