421036 divided by 18 
We want to figure out the number of times 421036 can be divided by 18.

On to step 1:
When dividing 4 by 18, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 18

Advancing to step 2:
18 can be fit into 42 2 times, resulting in a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 36 from 42 to get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 18

On to step 3:
When dividing 61 by 18, we get 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 23.0
The remainder is 7 after subtracting 54 from 61.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 18

Advancing to step 4:
If we divide 70 by 18, we get 3 and a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 233.0
If we take 54 away from 70, we end up with 16.
Append the next digit (3) from the dividend to 16 and continue with: 163 / 18

Step 5:
18 goes into 163 9 times with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 2339.0
Deduct 162 from 163 and we're left with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 18

Step 6:
If we divide 16 by 18, we get 0 and a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 23390.0
Deduct 0 from 16 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 7:
18 goes into 160 8 times with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 23390.8
If we take 144 away from 160, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 8:
160 divided by 18 is 8 with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 23390.88
If we take 144 away from 160, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

In conclusion, the division gives 23390.88 with a balance of 0.016.