18451239 ÷ 418 
We want to divide 18451239 by 418.

Moving on to step 1:
When dividing 1 by 418, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 418

On to step 2:
If we divide 18 by 418, we get 0 and a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Include the next digit (4) from the dividend after 18, then repeat: 184 / 418

On to step 3:
184 divided by 418 is 0 with a remainder of 184.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 184, we end up with 184.
Grab the next digit (5) from the dividend, add it to 184, then carry on: 1845 / 418

Advancing to step 4:
418 can be fit into 1845 4 times, resulting in a remainder of 173.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 1672 from 1845, we get 173.
Grab the next digit (1) from the dividend, add it to 173, then carry on: 1731 / 418

Step 5:
The number 418 fits into 1731 4 times, leaving a remainder of 59.
The number 4 becomes the next digit in our result. 
Result so far: 44.0
If we take 1672 away from 1731, we end up with 59.
Append the next digit (2) from the dividend to 59 and continue with: 592 / 418

Step 6:
The number 418 fits into 592 1 times, leaving a remainder of 174.
The number 1 becomes the next digit in our result. 
Result so far: 441.0
Deduct 418 from 592 and we're left with 174.
Include the next digit (3) from the dividend after 174, then repeat: 1743 / 418

Advancing to step 7:
If we divide 1743 by 418, we get 4 and a remainder of 71.
The number 4 becomes the next digit in our result. 
Result so far: 4414.0
Subtract 1672 from 1743 to get 71.
Fetch the next digit (9) from the dividend, attach it to 71 and continue: 719 / 418

Let's proceed to step 8:
418 can be fit into 719 1 times, resulting in a remainder of 301.
The next digit of our result is 1. 
Result so far: 44141.0
Subtracting 418 from 719 leaves us with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

Let's proceed to step 9:
3010 divided by 418 is 7 with a remainder of 84.
Record the quotient 7 as the next digit in the result. 
Result so far: 44141.7
Subtracting 2926 from 3010 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 10:
840 divided by 418 is 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 44141.72
The remainder is 4 after subtracting 836 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 11:
If we divide 40 by 418, we get 0 and a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 44141.72
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 12:
418 can be fit into 400 0 times, resulting in a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 44141.72
If we subtract 0 from 400, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

In conclusion, the division gives 44141.72 with a balance of 0.004.