We look at the division of 671392 by 20 
We're looking to find how many times 20 goes into 671392.

On to step 1:
6 divided by 20 is 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.
Grab the next digit (7) from the dividend, add it to 6, then carry on: 67 / 20

Let's proceed to step 2:
67 divided by 20 is 3 with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 60 from 67 and we're left with 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 20

Step 3:
If we divide 71 by 20, we get 3 and a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 33.0
Subtracting 60 from 71 leaves us with 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 20

Moving on to step 4:
113 divided by 20 is 5 with a remainder of 13.
Record the quotient 5 as the next digit in the result. 
Result so far: 335.0
The remainder is 13 after subtracting 100 from 113.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 20

Step 5:
If we divide 139 by 20, we get 6 and a remainder of 19.
The next digit of our result is 6. 
Result so far: 3356.0
If we subtract 120 from 139, we get 19.
Fetch the next digit (2) from the dividend, attach it to 19 and continue: 192 / 20

On to step 6:
20 can be fit into 192 9 times, resulting in a remainder of 12.
Record the quotient 9 as the next digit in the result. 
Result so far: 33569.0
If we subtract 180 from 192, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 7:
If we divide 120 by 20, we get 6 and a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 33569.6
Deduct 120 from 120 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.

On to step 8:
20 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 33569.6
Subtracting 0 from 0 leaves us 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.

Step 9:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 33569.6
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.

After the division, we end up with 33569.6 and a remainder of 0.0.