19813009 ÷ 403 
Let's see how many times 403 fits into 19813009.

Let's proceed to step 1:
When dividing 1 by 403, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 403

Advancing to step 2:
19 divided by 403 is 0 with a remainder of 19.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Take the next digit (8) from the dividend and append it to 19, then repeat: 198 / 403

Going ahead to step 3:
When dividing 198 by 403, we get 0 with a remainder of 198.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 198 and we're left with 198.
Include the next digit (1) from the dividend after 198, then repeat: 1981 / 403

Going ahead to step 4:
If we divide 1981 by 403, we get 4 and a remainder of 369.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 1612 from 1981 leaves us with 369.
Bring next digit (3) of the dividend behind the 369 and repeat the process: 3693 / 403

Moving on to step 5:
403 goes into 3693 9 times with a remainder of 66.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
Subtract 3627 from 3693 to get 66.
Include the next digit (0) from the dividend after 66, then repeat: 660 / 403

On to step 6:
403 can be fit into 660 1 times, resulting in a remainder of 257.
Use 1 as the next digit of our solution. 
Result so far: 491.0
If we subtract 403 from 660, we get 257.
Append the next digit (0) from the dividend to 257 and continue with: 2570 / 403

Let's proceed to step 7:
The number 403 fits into 2570 6 times, leaving a remainder of 152.
The number 6 becomes the next digit in our result. 
Result so far: 4916.0
Subtract 2418 from 2570 to get 152.
Bring next digit (9) of the dividend behind the 152 and repeat the process: 1529 / 403

Step 8:
1529 divided by 403 is 3 with a remainder of 320.
Write down 3 as next digit of the result. 
Result so far: 49163.0
Deduct 1209 from 1529 and we're left with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 9:
If we divide 3200 by 403, we get 7 and a remainder of 379.
Use 7 as the next digit of our solution. 
Result so far: 49163.7
If we subtract 2821 from 3200, we get 379.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3790, and continue the process.

Advancing to step 10:
403 goes into 3790 9 times with a remainder of 163.
Use 9 as the next digit of our solution. 
Result so far: 49163.79
The remainder is 163 after subtracting 3627 from 3790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

Moving on to step 11:
1630 divided by 403 is 4 with a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 49163.794
Subtract 1612 from 1630 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 12:
403 can be fit into 180 0 times, resulting in a remainder of 180.
Use 0 as the next digit of our solution. 
Result so far: 49163.794
Deduct 0 from 180 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 13:
If we divide 1800 by 403, we get 4 and a remainder of 188.
The number 4 becomes the next digit in our result. 
Result so far: 49163.79404
Deduct 1612 from 1800 and we're left with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

On to step 14:
When dividing 1880 by 403, we get 4 with a remainder of 268.
Use 4 as the next digit of our solution. 
Result so far: 49163.794044
If we subtract 1612 from 1880, we get 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

After the division, we end up with 49163.794044 and a remainder of 2.68e-05.