We look at the division of 423010 by 18 
We want to figure out the number of times 423010 can be divided by 18.

On to step 1:
If we divide 4 by 18, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 18

Going ahead to step 2:
18 can be fit into 42 2 times, resulting in a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 36 from 42 to get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 18

Advancing to step 3:
63 divided by 18 is 3 with a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 23.0
If we take 54 away from 63, we end up with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 18

Advancing to step 4:
18 goes into 90 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 235.0
The remainder is 0 after subtracting 90 from 90.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 18

On to step 5:
When dividing 1 by 18, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 2350.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 18

Going ahead to step 6:
18 goes into 10 0 times with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 23500.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
18 goes into 100 5 times with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 23500.5
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
18 goes into 100 5 times with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 23500.55
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 23500.55, with a leftover of 0.01.