We look at the division of 45237890 by 303 
We're looking to find how many times 303 goes into 45237890.

Step 1:
When dividing 4 by 303, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 303

On to step 2:
If we divide 45 by 303, we get 0 and a remainder of 45.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 45 and we're left with 45.
Include the next digit (2) from the dividend after 45, then repeat: 452 / 303

Going ahead to step 3:
The number 303 fits into 452 1 times, leaving a remainder of 149.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 303 from 452 leaves us with 149.
Include the next digit (3) from the dividend after 149, then repeat: 1493 / 303

Step 4:
The number 303 fits into 1493 4 times, leaving a remainder of 281.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Deduct 1212 from 1493 and we're left with 281.
Grab the next digit (7) from the dividend, add it to 281, then carry on: 2817 / 303

Step 5:
When dividing 2817 by 303, we get 9 with a remainder of 90.
Write down 9 as next digit of the result. 
Result so far: 149.0
Subtract 2727 from 2817 to get 90.
Include the next digit (8) from the dividend after 90, then repeat: 908 / 303

Moving on to step 6:
303 can be fit into 908 2 times, resulting in a remainder of 302.
The number 2 becomes the next digit in our result. 
Result so far: 1492.0
The remainder is 302 after subtracting 606 from 908.
Take the next digit (9) from the dividend and append it to 302, then repeat: 3029 / 303

Advancing to step 7:
When dividing 3029 by 303, we get 9 with a remainder of 302.
Use 9 as the next digit of our solution. 
Result so far: 14929.0
The remainder is 302 after subtracting 2727 from 3029.
Append the next digit (0) from the dividend to 302 and continue with: 3020 / 303

Let's proceed to step 8:
303 goes into 3020 9 times with a remainder of 293.
Record the quotient 9 as the next digit in the result. 
Result so far: 149299.0
If we subtract 2727 from 3020, we get 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

Let's proceed to step 9:
When dividing 2930 by 303, we get 9 with a remainder of 203.
The next digit of our result is 9. 
Result so far: 149299.9
If we subtract 2727 from 2930, we get 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Step 10:
303 can be fit into 2030 6 times, resulting in a remainder of 212.
Write down 6 as next digit of the result. 
Result so far: 149299.96
Subtract 1818 from 2030 to get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

On to step 11:
If we divide 2120 by 303, we get 6 and a remainder of 302.
The next digit of our result is 6. 
Result so far: 149299.966
Subtract 1818 from 2120 to get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

In conclusion, the division gives 149299.966 with a balance of 0.0302.