We divide 428366 by 90
We're looking to find how many times 90 goes into 428366.

Going ahead 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 (2) from the dividend, attach it to 4 and continue: 42 / 90

Let's proceed to step 2:
90 goes into 42 0 times with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Bring next digit (8) of the dividend behind the 42 and repeat the process: 428 / 90

Advancing to step 3:
90 goes into 428 4 times with a remainder of 68.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 360 from 428 leaves us with 68.
Include the next digit (3) from the dividend after 68, then repeat: 683 / 90

On to step 4:
When dividing 683 by 90, we get 7 with a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 47.0
Subtracting 630 from 683 leaves us with 53.
Bring next digit (6) of the dividend behind the 53 and repeat the process: 536 / 90

Let's proceed to step 5:
When dividing 536 by 90, we get 5 with a remainder of 86.
The next digit of our result is 5. 
Result so far: 475.0
If we subtract 450 from 536, we get 86.
Bring next digit (6) of the dividend behind the 86 and repeat the process: 866 / 90

Let's proceed to step 6:
The number 90 fits into 866 9 times, leaving a remainder of 56.
Record the quotient 9 as the next digit in the result. 
Result so far: 4759.0
If we subtract 810 from 866, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 7:
90 goes into 560 6 times with a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 4759.6
Subtract 540 from 560 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
90 can be fit into 200 2 times, resulting in a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 4759.62
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
The number 90 fits into 200 2 times, leaving a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 4759.622
Subtracting 180 from 200 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 4759.622, with a leftover of 0.002.