We're dividing 254643 by 90 
We want to figure out the number of times 254643 can be divided by 90.

Moving on to step 1:
If we divide 2 by 90, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 90

Let's proceed to step 2:
25 divided by 90 is 0 with a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Fetch the next digit (4) from the dividend, attach it to 25 and continue: 254 / 90

Step 3:
90 goes into 254 2 times with a remainder of 74.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 180 from 254 and we're left with 74.
Append the next digit (6) from the dividend to 74 and continue with: 746 / 90

Advancing to step 4:
746 divided by 90 is 8 with a remainder of 26.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Subtract 720 from 746 to get 26.
Fetch the next digit (4) from the dividend, attach it to 26 and continue: 264 / 90

Moving on to step 5:
When dividing 264 by 90, we get 2 with a remainder of 84.
Write down 2 as next digit of the result. 
Result so far: 282.0
The remainder is 84 after subtracting 180 from 264.
Bring next digit (3) of the dividend behind the 84 and repeat the process: 843 / 90

Going ahead to step 6:
90 goes into 843 9 times with a remainder of 33.
Put 9 as the next digit of the answer. 
Result so far: 2829.0
The remainder is 33 after subtracting 810 from 843.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 7:
330 divided by 90 is 3 with a remainder of 60.
The next digit of our result is 3. 
Result so far: 2829.3
Deduct 270 from 330 and we're left 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.

Step 8:
600 divided by 90 is 6 with a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 2829.36
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.

Going ahead 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: 2829.366
Deduct 540 from 600 and we're left 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.

After the division, we end up with 2829.366 and a remainder of 0.006.