673186 ÷ 31 
Our goal is to divide 673186 by 31.

On to step 1:
The number 31 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (7) from the dividend, attach it to 6 and continue: 67 / 31

Let's proceed to step 2:
67 divided by 31 is 2 with a remainder of 5.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 5 after subtracting 62 from 67.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 31

Going ahead to step 3:
When dividing 53 by 31, we get 1 with a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we subtract 31 from 53, we get 22.
Grab the next digit (1) from the dividend, add it to 22, then carry on: 221 / 31

Going ahead to step 4:
When dividing 221 by 31, we get 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 217.0
Deduct 217 from 221 and we're left with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 31

Step 5:
The number 31 fits into 48 1 times, leaving a remainder of 17.
The next digit of our result is 1. 
Result so far: 2171.0
The remainder is 17 after subtracting 31 from 48.
Bring next digit (6) of the dividend behind the 17 and repeat the process: 176 / 31

Going ahead to step 6:
176 divided by 31 is 5 with a remainder of 21.
Record the quotient 5 as the next digit in the result. 
Result so far: 21715.0
If we subtract 155 from 176, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 7:
31 can be fit into 210 6 times, resulting in a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 21715.6
Subtract 186 from 210 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 8:
31 can be fit into 240 7 times, resulting in a remainder of 23.
The next digit of our result is 7. 
Result so far: 21715.67
Subtract 217 from 240 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 9:
When dividing 230 by 31, we get 7 with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 21715.677
If we subtract 217 from 230, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

After the division, we end up with 21715.677 and a remainder of 0.0013.