We divide 437199 by 90
Our goal is to divide 437199 by 90.

Moving on to step 1:
When dividing 4 by 90, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 90

Step 2:
When dividing 43 by 90, we get 0 with a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 43 and we're left with 43.
Take the next digit (7) from the dividend and append it to 43, then repeat: 437 / 90

Going ahead to step 3:
90 can be fit into 437 4 times, resulting in a remainder of 77.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 360 from 437 leaves us with 77.
Grab the next digit (1) from the dividend, add it to 77, then carry on: 771 / 90

Let's proceed to step 4:
When dividing 771 by 90, we get 8 with a remainder of 51.
The number 8 becomes the next digit in our result. 
Result so far: 48.0
If we take 720 away from 771, we end up with 51.
Grab the next digit (9) from the dividend, add it to 51, then carry on: 519 / 90

Advancing to step 5:
519 divided by 90 is 5 with a remainder of 69.
Record the quotient 5 as the next digit in the result. 
Result so far: 485.0
Subtracting 450 from 519 leaves us with 69.
Include the next digit (9) from the dividend after 69, then repeat: 699 / 90

On to step 6:
The number 90 fits into 699 7 times, leaving a remainder of 69.
Put 7 as the next digit of the answer. 
Result so far: 4857.0
If we subtract 630 from 699, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 7:
When dividing 690 by 90, we get 7 with a remainder of 60.
Record the quotient 7 as the next digit in the result. 
Result so far: 4857.7
Subtracting 630 from 690 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 8:
600 divided by 90 is 6 with a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 4857.76
If we subtract 540 from 600, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 9:
When dividing 600 by 90, we get 6 with a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 4857.766
If we take 540 away from 600, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final outcome is 4857.766, with a leftover of 0.006.