Let's divide 42340790 by 666
Let's see how many times 666 fits into 42340790.

On to step 1:
666 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 666

Let's proceed to step 2:
42 divided by 666 is 0 with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Bring next digit (3) of the dividend behind the 42 and repeat the process: 423 / 666

Moving on to step 3:
423 divided by 666 is 0 with a remainder of 423.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 423 after subtracting 0 from 423.
Include the next digit (4) from the dividend after 423, then repeat: 4234 / 666

Let's proceed to step 4:
When dividing 4234 by 666, we get 6 with a remainder of 238.
The next digit of our result is 6. 
Result so far: 6.0
If we subtract 3996 from 4234, we get 238.
Append the next digit (0) from the dividend to 238 and continue with: 2380 / 666

Advancing to step 5:
666 goes into 2380 3 times with a remainder of 382.
Use 3 as the next digit of our solution. 
Result so far: 63.0
If we subtract 1998 from 2380, we get 382.
Fetch the next digit (7) from the dividend, attach it to 382 and continue: 3827 / 666

Step 6:
The number 666 fits into 3827 5 times, leaving a remainder of 497.
Record the quotient 5 as the next digit in the result. 
Result so far: 635.0
The remainder is 497 after subtracting 3330 from 3827.
Fetch the next digit (9) from the dividend, attach it to 497 and continue: 4979 / 666

Let's proceed to step 7:
If we divide 4979 by 666, we get 7 and a remainder of 317.
The number 7 becomes the next digit in our result. 
Result so far: 6357.0
If we take 4662 away from 4979, we end up with 317.
Append the next digit (0) from the dividend to 317 and continue with: 3170 / 666

Going ahead to step 8:
666 can be fit into 3170 4 times, resulting in a remainder of 506.
The next digit of our result is 4. 
Result so far: 63574.0
If we subtract 2664 from 3170, we get 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Going ahead to step 9:
The number 666 fits into 5060 7 times, leaving a remainder of 398.
The number 7 becomes the next digit in our result. 
Result so far: 63574.7
If we take 4662 away from 5060, we end up with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Let's proceed to step 10:
3980 divided by 666 is 5 with a remainder of 650.
Write down 5 as next digit of the result. 
Result so far: 63574.75
Subtracting 3330 from 3980 leaves us with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Moving on to step 11:
6500 divided by 666 is 9 with a remainder of 506.
The number 9 becomes the next digit in our result. 
Result so far: 63574.759
Subtract 5994 from 6500 to get 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Moving on to step 12:
The number 666 fits into 5060 7 times, leaving a remainder of 398.
Use 7 as the next digit of our solution. 
Result so far: 63574.7597
If we take 4662 away from 5060, we end up with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Moving on to step 13:
666 goes into 3980 5 times with a remainder of 650.
Use 5 as the next digit of our solution. 
Result so far: 63574.75975
If we take 3330 away from 3980, we end up with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

On to step 14:
When dividing 6500 by 666, we get 9 with a remainder of 506.
Put 9 as the next digit of the answer. 
Result so far: 63574.759759
Subtract 5994 from 6500 to get 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Going ahead to step 15:
5060 divided by 666 is 7 with a remainder of 398.
Use 7 as the next digit of our solution. 
Result so far: 63574.7597597
Deduct 4662 from 5060 and we're left with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Moving on to step 16:
666 goes into 3980 5 times with a remainder of 650.
The next digit of our result is 5. 
Result so far: 63574.75975975
Deduct 3330 from 3980 and we're left with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

In conclusion, the division gives 63574.75975975 with a balance of 6.5e-07.