666940 ÷ 34 
Our goal is to divide 666940 by 34.

Going ahead to step 1:
If we divide 6 by 34, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 34

On to step 2:
The number 34 fits into 66 1 times, leaving a remainder of 32.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 34 from 66 and we're left with 32.
Grab the next digit (6) from the dividend, add it to 32, then carry on: 326 / 34

Moving on to step 3:
The number 34 fits into 326 9 times, leaving a remainder of 20.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
If we subtract 306 from 326, we get 20.
Append the next digit (9) from the dividend to 20 and continue with: 209 / 34

Advancing to step 4:
The number 34 fits into 209 6 times, leaving a remainder of 5.
Put 6 as the next digit of the answer. 
Result so far: 196.0
If we take 204 away from 209, we end up with 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 34

Step 5:
34 can be fit into 54 1 times, resulting in a remainder of 20.
Put 1 as the next digit of the answer. 
Result so far: 1961.0
The remainder is 20 after subtracting 34 from 54.
Grab the next digit (0) from the dividend, add it to 20, then carry on: 200 / 34

Advancing to step 6:
34 can be fit into 200 5 times, resulting in a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 19615.0
If we subtract 170 from 200, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 7:
300 divided by 34 is 8 with a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 19615.8
Deduct 272 from 300 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 8:
When dividing 280 by 34, we get 8 with a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 19615.88
Subtract 272 from 280 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 19615.88, with a leftover of 0.008.