90454 ÷ 42 
We want to figure out the number of times 90454 can be divided by 42.

Let's proceed to step 1:
The number 42 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 42

Let's proceed to step 2:
If we divide 90 by 42, we get 2 and a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 84 from 90 and we're left with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 42

Moving on to step 3:
42 can be fit into 64 1 times, resulting in a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
If we take 42 away from 64, we end up with 22.
Fetch the next digit (5) from the dividend, attach it to 22 and continue: 225 / 42

Step 4:
When dividing 225 by 42, we get 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 215.0
The remainder is 15 after subtracting 210 from 225.
Grab the next digit (4) from the dividend, add it to 15, then carry on: 154 / 42

Step 5:
If we divide 154 by 42, we get 3 and a remainder of 28.
Put 3 as the next digit of the answer. 
Result so far: 2153.0
Subtract 126 from 154 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 6:
42 goes into 280 6 times with a remainder of 28.
The next digit of our result is 6. 
Result so far: 2153.6
If we take 252 away from 280, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 7:
42 can be fit into 280 6 times, resulting in a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 2153.66
If we subtract 252 from 280, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final result is 2153.66 with a remainder of 0.028.