3654 ÷ 90 
We want to figure out the number of times 3654 can be divided by 90.

On to step 1:
If we divide 3 by 90, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 90

Let's proceed to step 2:
If we divide 36 by 90, we get 0 and a remainder of 36.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 36 after subtracting 0 from 36.
Bring next digit (5) of the dividend behind the 36 and repeat the process: 365 / 90

Going ahead to step 3:
365 divided by 90 is 4 with a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 5 after subtracting 360 from 365.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 90

On to step 4:
54 divided by 90 is 0 with a remainder of 54.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Subtracting 0 from 54 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 5:
540 divided by 90 is 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 40.6
The remainder is 0 after subtracting 540 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 6:
If we divide 0 by 90, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.6
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
If we divide 0 by 90, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.6
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 40.6, and the remainder is 0.0.