42535303 ÷ 397 
Let's see how many times 397 fits into 42535303.

Advancing to step 1:
4 divided by 397 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 397

Step 2:
397 can be fit into 42 0 times, resulting in a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Fetch the next digit (5) from the dividend, attach it to 42 and continue: 425 / 397

Moving on to step 3:
If we divide 425 by 397, we get 1 and a remainder of 28.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 397 from 425 leaves us with 28.
Take the next digit (3) from the dividend and append it to 28, then repeat: 283 / 397

On to step 4:
397 can be fit into 283 0 times, resulting in a remainder of 283.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 283 and we're left with 283.
Include the next digit (5) from the dividend after 283, then repeat: 2835 / 397

Advancing to step 5:
397 can be fit into 2835 7 times, resulting in a remainder of 56.
The next digit of our result is 7. 
Result so far: 107.0
If we subtract 2779 from 2835, we get 56.
Bring next digit (3) of the dividend behind the 56 and repeat the process: 563 / 397

Moving on to step 6:
The number 397 fits into 563 1 times, leaving a remainder of 166.
The next digit of our result is 1. 
Result so far: 1071.0
Subtract 397 from 563 to get 166.
Append the next digit (0) from the dividend to 166 and continue with: 1660 / 397

Step 7:
If we divide 1660 by 397, we get 4 and a remainder of 72.
The number 4 becomes the next digit in our result. 
Result so far: 10714.0
If we take 1588 away from 1660, we end up with 72.
Fetch the next digit (3) from the dividend, attach it to 72 and continue: 723 / 397

On to step 8:
397 goes into 723 1 times with a remainder of 326.
Use 1 as the next digit of our solution. 
Result so far: 107141.0
The remainder is 326 after subtracting 397 from 723.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Moving on to step 9:
3260 divided by 397 is 8 with a remainder of 84.
Use 8 as the next digit of our solution. 
Result so far: 107141.8
If we subtract 3176 from 3260, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 10:
840 divided by 397 is 2 with a remainder of 46.
Put 2 as the next digit of the answer. 
Result so far: 107141.82
If we subtract 794 from 840, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 11:
397 can be fit into 460 1 times, resulting in a remainder of 63.
The number 1 becomes the next digit in our result. 
Result so far: 107141.821
Subtracting 397 from 460 leaves us with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 12:
When dividing 630 by 397, we get 1 with a remainder of 233.
Write down 1 as next digit of the result. 
Result so far: 107141.8211
Subtracting 397 from 630 leaves us with 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

The final outcome is 107141.8211, with a leftover of 0.00233.