We look at the division of 997890 by 1 
We want to divide 997890 by 1.

Step 1:
The number 1 fits into 9 9 times, leaving a remainder of 0.
The next digit of our result is 9. 
Result so far: 9.0
If we subtract 9 from 9, we get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 1

Moving on to step 2:
1 goes into 9 9 times with a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 99.0
Subtract 9 from 9 to get 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 1

Going ahead to step 3:
When dividing 7 by 1, we get 7 with a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 997.0
If we subtract 7 from 7, we get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 1

Moving on to step 4:
The number 1 fits into 8 8 times, leaving a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 9978.0
If we take 8 away from 8, we end up with 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 1

On to step 5:
9 divided by 1 is 9 with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 99789.0
If we take 9 away from 9, we end up with 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 1

Step 6:
0 divided by 1 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 997890.0
If we take 0 away from 0, 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.

Going ahead to step 7:
0 divided by 1 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 997890.0
If we take 0 away from 0, 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.

Let's proceed to step 8:
1 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 997890.0
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 997890.0, with a leftover of 0.0.