We look at the division of 142190 by 1 
We want to divide 142190 by 1.

Let's proceed to step 1:
The number 1 fits into 1 1 times, leaving a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 1 from 1, we get 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 1

Moving on to step 2:
When dividing 4 by 1, we get 4 with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
Subtracting 4 from 4 leaves us with 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 1

Step 3:
2 divided by 1 is 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 142.0
Deduct 2 from 2 and we're left with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 1

On to step 4:
If we divide 1 by 1, we get 1 and a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1421.0
Deduct 1 from 1 and we're left with 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 1

Advancing to step 5:
When dividing 9 by 1, we get 9 with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 14219.0
The remainder is 0 after subtracting 9 from 9.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 1

Going ahead to step 6:
When dividing 0 by 1, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 142190.0
Subtract 0 from 0 to 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.

Moving on to step 7:
0 divided by 1 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 142190.0
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.

Going ahead to step 8:
When dividing 0 by 1, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 142190.0
The remainder is 0 after subtracting 0 from 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 142190.0, with a leftover of 0.0.