We look at the division of 673921 by 9 
We're looking to find how many times 9 goes into 673921.

On to step 1:
9 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (7) from the dividend, add it to 6, then carry on: 67 / 9

Going ahead to step 2:
The number 9 fits into 67 7 times, leaving a remainder of 4.
The next digit of our result is 7. 
Result so far: 7.0
Subtracting 63 from 67 leaves us with 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 9

Advancing to step 3:
9 goes into 43 4 times with a remainder of 7.
Record the quotient 4 as the next digit in the result. 
Result so far: 74.0
Subtracting 36 from 43 leaves us with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 9

On to step 4:
The number 9 fits into 79 8 times, leaving a remainder of 7.
Record the quotient 8 as the next digit in the result. 
Result so far: 748.0
The remainder is 7 after subtracting 72 from 79.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 9

On to step 5:
72 divided by 9 is 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 7488.0
Subtract 72 from 72 to get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 9

Let's proceed to step 6:
The number 9 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 74880.0
Subtract 0 from 1 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
The number 9 fits into 10 1 times, leaving a remainder of 1.
The next digit of our result is 1. 
Result so far: 74880.1
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
9 can be fit into 10 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 74880.11
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 74880.11 and a remainder of 0.001.