280170 ÷ 9 
We want to figure out the number of times 280170 can be divided by 9.

Step 1:
When dividing 2 by 9, we get 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 9

Step 2:
9 can be fit into 28 3 times, resulting in a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 27 from 28 to get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 9

Let's proceed to step 3:
If we divide 10 by 9, we get 1 and a remainder of 1.
The next digit of our result is 1. 
Result so far: 31.0
Subtracting 9 from 10 leaves us with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 9

Moving on to step 4:
9 goes into 11 1 times with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 311.0
If we take 9 away from 11, we end up with 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 9

Advancing to step 5:
When dividing 27 by 9, we get 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 3113.0
If we take 27 away from 27, we end up with 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 9

Let's proceed to step 6:
0 divided by 9 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 31130.0
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.

Going ahead to step 7:
The number 9 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 31130.0
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.

Advancing to step 8:
0 divided by 9 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 31130.0
If we subtract 0 from 0, we 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.

The final outcome is 31130.0, with a leftover of 0.0.