We divide 903351 by 18
Let's see how many times 18 fits into 903351.

Step 1:
The number 18 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 18

Advancing to step 2:
If we divide 90 by 18, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 90 from 90 to get 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 18

Let's proceed to step 3:
The number 18 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 50.0
If we take 0 away from 3, we end up with 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 18

Moving on to step 4:
18 can be fit into 33 1 times, resulting in a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 501.0
Subtracting 18 from 33 leaves us with 15.
Append the next digit (5) from the dividend to 15 and continue with: 155 / 18

Step 5:
18 can be fit into 155 8 times, resulting in a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 5018.0
Deduct 144 from 155 and we're left with 11.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 18

Going ahead to step 6:
The number 18 fits into 111 6 times, leaving a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 50186.0
The remainder is 3 after subtracting 108 from 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
18 can be fit into 30 1 times, resulting in a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 50186.1
If we take 18 away from 30, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 8:
18 goes into 120 6 times with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 50186.16
If we take 108 away from 120, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
18 can be fit into 120 6 times, resulting in a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 50186.166
Deduct 108 from 120 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 50186.166, with a leftover of 0.0012.