42023841 ÷ 393 
We want to divide 42023841 by 393.

Going ahead to step 1:
When dividing 4 by 393, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 393

Moving on to step 2:
If we divide 42 by 393, we get 0 and a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Take the next digit (0) from the dividend and append it to 42, then repeat: 420 / 393

Step 3:
393 can be fit into 420 1 times, resulting in a remainder of 27.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 393 from 420 and we're left with 27.
Take the next digit (2) from the dividend and append it to 27, then repeat: 272 / 393

Going ahead to step 4:
When dividing 272 by 393, we get 0 with a remainder of 272.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 272 and we're left with 272.
Fetch the next digit (3) from the dividend, attach it to 272 and continue: 2723 / 393

On to step 5:
393 can be fit into 2723 6 times, resulting in a remainder of 365.
The number 6 becomes the next digit in our result. 
Result so far: 106.0
Subtract 2358 from 2723 to get 365.
Include the next digit (8) from the dividend after 365, then repeat: 3658 / 393

Let's proceed to step 6:
The number 393 fits into 3658 9 times, leaving a remainder of 121.
Record the quotient 9 as the next digit in the result. 
Result so far: 1069.0
Subtract 3537 from 3658 to get 121.
Append the next digit (4) from the dividend to 121 and continue with: 1214 / 393

Moving on to step 7:
393 can be fit into 1214 3 times, resulting in a remainder of 35.
The next digit of our result is 3. 
Result so far: 10693.0
Subtracting 1179 from 1214 leaves us with 35.
Bring next digit (1) of the dividend behind the 35 and repeat the process: 351 / 393

On to step 8:
393 can be fit into 351 0 times, resulting in a remainder of 351.
The number 0 becomes the next digit in our result. 
Result so far: 106930.0
Subtract 0 from 351 to get 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Let's proceed to step 9:
The number 393 fits into 3510 8 times, leaving a remainder of 366.
Record the quotient 8 as the next digit in the result. 
Result so far: 106930.8
Subtracting 3144 from 3510 leaves us with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Going ahead to step 10:
When dividing 3660 by 393, we get 9 with a remainder of 123.
Use 9 as the next digit of our solution. 
Result so far: 106930.89
If we take 3537 away from 3660, we end up with 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Advancing to step 11:
The number 393 fits into 1230 3 times, leaving a remainder of 51.
Record the quotient 3 as the next digit in the result. 
Result so far: 106930.893
If we take 1179 away from 1230, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 12:
393 goes into 510 1 times with a remainder of 117.
Put 1 as the next digit of the answer. 
Result so far: 106930.8931
Subtracting 393 from 510 leaves us with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Moving on to step 13:
393 goes into 1170 2 times with a remainder of 384.
Use 2 as the next digit of our solution. 
Result so far: 106930.89312
Subtracting 786 from 1170 leaves us with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Let's proceed to step 14:
The number 393 fits into 3840 9 times, leaving a remainder of 303.
Use 9 as the next digit of our solution. 
Result so far: 106930.893129
If we subtract 3537 from 3840, we get 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Step 15:
When dividing 3030 by 393, we get 7 with a remainder of 279.
Put 7 as the next digit of the answer. 
Result so far: 106930.8931297
Subtract 2751 from 3030 to get 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Advancing to step 16:
If we divide 2790 by 393, we get 7 and a remainder of 39.
Put 7 as the next digit of the answer. 
Result so far: 106930.89312977
The remainder is 39 after subtracting 2751 from 2790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

After the division, we end up with 106930.89312977 and a remainder of 3.9e-08.