786123 ÷ 9 
We want to divide 786123 by 9.

On to step 1:
If we divide 7 by 9, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 9

Moving on to step 2:
When dividing 78 by 9, we get 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 72 from 78 and we're left with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 9

Going ahead to step 3:
9 goes into 66 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 87.0
The remainder is 3 after subtracting 63 from 66.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 9

Step 4:
When dividing 31 by 9, we get 3 with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 873.0
Deduct 27 from 31 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 9

Moving on to step 5:
9 goes into 42 4 times with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 8734.0
If we subtract 36 from 42, we get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 9

Step 6:
63 divided by 9 is 7 with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 87347.0
Deduct 63 from 63 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 7:
9 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 87347.0
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.

Moving on to step 8:
When dividing 0 by 9, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 87347.0
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.

Our division results in 87347.0 with a remaining 0.0.