643436 divided by 9 
We want to divide 643436 by 9.

On to step 1:
When dividing 6 by 9, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 9

Moving on to step 2:
If we divide 64 by 9, we get 7 and a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 63 from 64, we get 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 9

On to step 3:
The number 9 fits into 13 1 times, leaving a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 71.0
The remainder is 4 after subtracting 9 from 13.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 9

Let's proceed to step 4:
When dividing 44 by 9, we get 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 714.0
If we take 36 away from 44, we end up with 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 9

Going ahead to step 5:
9 goes into 83 9 times with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 7149.0
If we subtract 81 from 83, we get 2.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 9

On to step 6:
If we divide 26 by 9, we get 2 and a remainder of 8.
The next digit of our result is 2. 
Result so far: 71492.0
If we subtract 18 from 26, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 7:
The number 9 fits into 80 8 times, leaving a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 71492.8
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
When dividing 80 by 9, we get 8 with a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 71492.88
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 71492.88 with a balance of 0.008.