We divide 643267 by 90
Our goal is to divide 643267 by 90.

Step 1:
6 divided by 90 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 90

Moving on to step 2:
When dividing 64 by 90, we get 0 with a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Fetch the next digit (3) from the dividend, attach it to 64 and continue: 643 / 90

Moving on to step 3:
90 can be fit into 643 7 times, resulting in a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 7.0
The remainder is 13 after subtracting 630 from 643.
Grab the next digit (2) from the dividend, add it to 13, then carry on: 132 / 90

Going ahead to step 4:
90 goes into 132 1 times with a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 71.0
If we subtract 90 from 132, we get 42.
Grab the next digit (6) from the dividend, add it to 42, then carry on: 426 / 90

Going ahead to step 5:
The number 90 fits into 426 4 times, leaving a remainder of 66.
The next digit of our result is 4. 
Result so far: 714.0
Deduct 360 from 426 and we're left with 66.
Take the next digit (7) from the dividend and append it to 66, then repeat: 667 / 90

Going ahead to step 6:
667 divided by 90 is 7 with a remainder of 37.
Write down 7 as next digit of the result. 
Result so far: 7147.0
If we subtract 630 from 667, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 7:
If we divide 370 by 90, we get 4 and a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 7147.4
Deduct 360 from 370 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
When dividing 100 by 90, we get 1 with a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 7147.41
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
When dividing 100 by 90, we get 1 with a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 7147.411
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 7147.411 with a balance of 0.001.