671859 ÷ 5 
We're looking to find how many times 5 goes into 671859.

On to step 1:
6 divided by 5 is 1 with a remainder of 1.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 1 after subtracting 5 from 6.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 5

Advancing to step 2:
17 divided by 5 is 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 13.0
The remainder is 2 after subtracting 15 from 17.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 5

On to step 3:
The number 5 fits into 21 4 times, leaving a remainder of 1.
The next digit of our result is 4. 
Result so far: 134.0
Subtracting 20 from 21 leaves us with 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 5

On to step 4:
When dividing 18 by 5, we get 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 1343.0
If we subtract 15 from 18, we get 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 5

Advancing to step 5:
5 goes into 35 7 times with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 13437.0
Subtract 35 from 35 to get 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 5

Moving on to step 6:
The number 5 fits into 9 1 times, leaving a remainder of 4.
Use 1 as the next digit of our solution. 
Result so far: 134371.0
If we subtract 5 from 9, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 7:
40 divided by 5 is 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 134371.8
If we subtract 40 from 40, we get 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:
5 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 134371.8
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.

Going ahead to step 9:
5 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 134371.8
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 134371.8 with a remainder of 0.0.