Let's divide 42390108 by 629
Let's see how many times 629 fits into 42390108.

Step 1:
629 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 629

Step 2:
629 can be fit into 42 0 times, resulting in a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Bring next digit (3) of the dividend behind the 42 and repeat the process: 423 / 629

On to step 3:
The number 629 fits into 423 0 times, leaving a remainder of 423.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 423 to get 423.
Fetch the next digit (9) from the dividend, attach it to 423 and continue: 4239 / 629

Step 4:
629 can be fit into 4239 6 times, resulting in a remainder of 465.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 3774 from 4239 to get 465.
Bring next digit (0) of the dividend behind the 465 and repeat the process: 4650 / 629

On to step 5:
When dividing 4650 by 629, we get 7 with a remainder of 247.
The number 7 becomes the next digit in our result. 
Result so far: 67.0
Subtracting 4403 from 4650 leaves us with 247.
Fetch the next digit (1) from the dividend, attach it to 247 and continue: 2471 / 629

Advancing to step 6:
2471 divided by 629 is 3 with a remainder of 584.
Write down 3 as next digit of the result. 
Result so far: 673.0
The remainder is 584 after subtracting 1887 from 2471.
Bring next digit (0) of the dividend behind the 584 and repeat the process: 5840 / 629

On to step 7:
629 can be fit into 5840 9 times, resulting in a remainder of 179.
Write down 9 as next digit of the result. 
Result so far: 6739.0
The remainder is 179 after subtracting 5661 from 5840.
Grab the next digit (8) from the dividend, add it to 179, then carry on: 1798 / 629

On to step 8:
The number 629 fits into 1798 2 times, leaving a remainder of 540.
Use 2 as the next digit of our solution. 
Result so far: 67392.0
Subtract 1258 from 1798 to get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Step 9:
If we divide 5400 by 629, we get 8 and a remainder of 368.
Record the quotient 8 as the next digit in the result. 
Result so far: 67392.8
If we subtract 5032 from 5400, we get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Step 10:
If we divide 3680 by 629, we get 5 and a remainder of 535.
Record the quotient 5 as the next digit in the result. 
Result so far: 67392.85
If we take 3145 away from 3680, we end up with 535.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

Moving on to step 11:
If we divide 5350 by 629, we get 8 and a remainder of 318.
Use 8 as the next digit of our solution. 
Result so far: 67392.858
Subtract 5032 from 5350 to get 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

On to step 12:
The number 629 fits into 3180 5 times, leaving a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 67392.8585
Subtract 3145 from 3180 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 13:
The number 629 fits into 350 0 times, leaving a remainder of 350.
The next digit of our result is 0. 
Result so far: 67392.8585
Subtract 0 from 350 to get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Let's proceed to step 14:
If we divide 3500 by 629, we get 5 and a remainder of 355.
Write down 5 as next digit of the result. 
Result so far: 67392.858505
Subtract 3145 from 3500 to get 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Let's proceed to step 15:
If we divide 3550 by 629, we get 5 and a remainder of 405.
The next digit of our result is 5. 
Result so far: 67392.8585055
If we subtract 3145 from 3550, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

After the division, we end up with 67392.8585055 and a remainder of 4.05e-06.