Let's divide 141390 by 18
We're looking to find how many times 18 goes into 141390.

Step 1:
If we divide 1 by 18, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 18

Moving on to step 2:
18 goes into 14 0 times with a remainder of 14.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 14 and we're left with 14.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 18

Step 3:
The number 18 fits into 141 7 times, leaving a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 7.0
The remainder is 15 after subtracting 126 from 141.
Grab the next digit (3) from the dividend, add it to 15, then carry on: 153 / 18

Moving on to step 4:
153 divided by 18 is 8 with a remainder of 9.
Use 8 as the next digit of our solution. 
Result so far: 78.0
Deduct 144 from 153 and we're left with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 18

Advancing to step 5:
When dividing 99 by 18, we get 5 with a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 785.0
If we subtract 90 from 99, we get 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 18

Going ahead to step 6:
The number 18 fits into 90 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 7855.0
If we take 90 away from 90, 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.

On to step 7:
18 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 7855.0
Subtracting 0 from 0 leaves us 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.

Step 8:
The number 18 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 7855.0
Deduct 0 from 0 and we're left 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.

The final outcome is 7855.0, with a leftover of 0.0.