668659 divided by 42 
Let's see how many times 42 fits into 668659.

Moving on to step 1:
The number 42 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 42

Step 2:
When dividing 66 by 42, we get 1 with a remainder of 24.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 42 from 66 leaves us with 24.
Include the next digit (8) from the dividend after 24, then repeat: 248 / 42

Advancing to step 3:
If we divide 248 by 42, we get 5 and a remainder of 38.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 210 from 248 to get 38.
Fetch the next digit (6) from the dividend, attach it to 38 and continue: 386 / 42

Advancing to step 4:
If we divide 386 by 42, we get 9 and a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 159.0
If we take 378 away from 386, we end up with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 42

On to step 5:
The number 42 fits into 85 2 times, leaving a remainder of 1.
The next digit of our result is 2. 
Result so far: 1592.0
Subtract 84 from 85 to get 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 42

Step 6:
19 divided by 42 is 0 with a remainder of 19.
The next digit of our result is 0. 
Result so far: 15920.0
The remainder is 19 after subtracting 0 from 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
190 divided by 42 is 4 with a remainder of 22.
Put 4 as the next digit of the answer. 
Result so far: 15920.4
If we take 168 away from 190, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 8:
The number 42 fits into 220 5 times, leaving a remainder of 10.
The next digit of our result is 5. 
Result so far: 15920.45
The remainder is 10 after subtracting 210 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
42 can be fit into 100 2 times, resulting in a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 15920.452
If we subtract 84 from 100, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 10:
42 goes into 160 3 times with a remainder of 34.
Use 3 as the next digit of our solution. 
Result so far: 15920.4523
The remainder is 34 after subtracting 126 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 11:
When dividing 340 by 42, we get 8 with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 15920.45238
If we take 336 away from 340, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 12:
42 can be fit into 40 0 times, resulting in a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 15920.45238
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 13:
42 goes into 400 9 times with a remainder of 22.
The next digit of our result is 9. 
Result so far: 15920.4523809
Subtracting 378 from 400 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 14:
The number 42 fits into 220 5 times, leaving a remainder of 10.
The next digit of our result is 5. 
Result so far: 15920.45238095
Deduct 210 from 220 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 15920.45238095 with a remaining 1e-08.