Let's divide 42390943 by 705
We're looking to find how many times 705 goes into 42390943.

Moving on to step 1:
The number 705 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 705

Moving on to step 2:
If we divide 42 by 705, we get 0 and a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Fetch the next digit (3) from the dividend, attach it to 42 and continue: 423 / 705

On to step 3:
705 can be fit into 423 0 times, resulting in a remainder of 423.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 423, we end up with 423.
Take the next digit (9) from the dividend and append it to 423, then repeat: 4239 / 705

Moving on to step 4:
When dividing 4239 by 705, we get 6 with a remainder of 9.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 4230 from 4239 leaves us with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 705

Let's proceed to step 5:
705 can be fit into 90 0 times, resulting in a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 60.0
The remainder is 90 after subtracting 0 from 90.
Take the next digit (9) from the dividend and append it to 90, then repeat: 909 / 705

Step 6:
909 divided by 705 is 1 with a remainder of 204.
Put 1 as the next digit of the answer. 
Result so far: 601.0
The remainder is 204 after subtracting 705 from 909.
Bring next digit (4) of the dividend behind the 204 and repeat the process: 2044 / 705

Moving on to step 7:
2044 divided by 705 is 2 with a remainder of 634.
Put 2 as the next digit of the answer. 
Result so far: 6012.0
If we subtract 1410 from 2044, we get 634.
Grab the next digit (3) from the dividend, add it to 634, then carry on: 6343 / 705

Step 8:
6343 divided by 705 is 8 with a remainder of 703.
The next digit of our result is 8. 
Result so far: 60128.0
If we take 5640 away from 6343, we end up with 703.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7030, and continue the process.

Step 9:
The number 705 fits into 7030 9 times, leaving a remainder of 685.
The next digit of our result is 9. 
Result so far: 60128.9
The remainder is 685 after subtracting 6345 from 7030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6850, and continue the process.

Let's proceed to step 10:
When dividing 6850 by 705, we get 9 with a remainder of 505.
The number 9 becomes the next digit in our result. 
Result so far: 60128.99
Deduct 6345 from 6850 and we're left with 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

The final result is 60128.99 with a remainder of 0.505.