421208 ÷ 45 
We want to divide 421208 by 45.

Moving on to step 1:
45 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 45

Advancing to step 2:
45 goes into 42 0 times with a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Grab the next digit (1) from the dividend, add it to 42, then carry on: 421 / 45

Going ahead to step 3:
When dividing 421 by 45, we get 9 with a remainder of 16.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 405 from 421 to get 16.
Append the next digit (2) from the dividend to 16 and continue with: 162 / 45

Let's proceed to step 4:
The number 45 fits into 162 3 times, leaving a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 93.0
The remainder is 27 after subtracting 135 from 162.
Append the next digit (0) from the dividend to 27 and continue with: 270 / 45

Let's proceed to step 5:
If we divide 270 by 45, we get 6 and a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 936.0
The remainder is 0 after subtracting 270 from 270.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 45

Step 6:
45 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 9360.0
The remainder is 8 after subtracting 0 from 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
The number 45 fits into 80 1 times, leaving a remainder of 35.
Write down 1 as next digit of the result. 
Result so far: 9360.1
The remainder is 35 after subtracting 45 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 8:
When dividing 350 by 45, we get 7 with a remainder of 35.
The number 7 becomes the next digit in our result. 
Result so far: 9360.17
Subtracting 315 from 350 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 9:
45 goes into 350 7 times with a remainder of 35.
Use 7 as the next digit of our solution. 
Result so far: 9360.177
Subtracting 315 from 350 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 9360.177, with a leftover of 0.0035.