We look at the division of 42510257 by 313 
Let's see how many times 313 fits into 42510257.

Step 1:
4 divided by 313 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 313

Let's proceed to step 2:
The number 313 fits into 42 0 times, leaving a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Append the next digit (5) from the dividend to 42 and continue with: 425 / 313

Let's proceed to step 3:
313 can be fit into 425 1 times, resulting in a remainder of 112.
The next digit of our result is 1. 
Result so far: 1.0
If we take 313 away from 425, we end up with 112.
Append the next digit (1) from the dividend to 112 and continue with: 1121 / 313

Moving on to step 4:
When dividing 1121 by 313, we get 3 with a remainder of 182.
The next digit of our result is 3. 
Result so far: 13.0
Subtracting 939 from 1121 leaves us with 182.
Include the next digit (0) from the dividend after 182, then repeat: 1820 / 313

Step 5:
313 can be fit into 1820 5 times, resulting in a remainder of 255.
The next digit of our result is 5. 
Result so far: 135.0
Deduct 1565 from 1820 and we're left with 255.
Take the next digit (2) from the dividend and append it to 255, then repeat: 2552 / 313

Moving on to step 6:
313 can be fit into 2552 8 times, resulting in a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 1358.0
If we take 2504 away from 2552, we end up with 48.
Grab the next digit (5) from the dividend, add it to 48, then carry on: 485 / 313

Let's proceed to step 7:
If we divide 485 by 313, we get 1 and a remainder of 172.
Record the quotient 1 as the next digit in the result. 
Result so far: 13581.0
Subtracting 313 from 485 leaves us with 172.
Bring next digit (7) of the dividend behind the 172 and repeat the process: 1727 / 313

Advancing to step 8:
313 can be fit into 1727 5 times, resulting in a remainder of 162.
Put 5 as the next digit of the answer. 
Result so far: 135815.0
Subtracting 1565 from 1727 leaves us with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Step 9:
313 goes into 1620 5 times with a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 135815.5
Subtracting 1565 from 1620 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 10:
When dividing 550 by 313, we get 1 with a remainder of 237.
The number 1 becomes the next digit in our result. 
Result so far: 135815.51
The remainder is 237 after subtracting 313 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Let's proceed to step 11:
When dividing 2370 by 313, we get 7 with a remainder of 179.
Record the quotient 7 as the next digit in the result. 
Result so far: 135815.517
Deduct 2191 from 2370 and we're left with 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Step 12:
If we divide 1790 by 313, we get 5 and a remainder of 225.
The number 5 becomes the next digit in our result. 
Result so far: 135815.5175
If we take 1565 away from 1790, we end up with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Step 13:
2250 divided by 313 is 7 with a remainder of 59.
The number 7 becomes the next digit in our result. 
Result so far: 135815.51757
If we take 2191 away from 2250, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Step 14:
If we divide 590 by 313, we get 1 and a remainder of 277.
Write down 1 as next digit of the result. 
Result so far: 135815.517571
Subtract 313 from 590 to get 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

On to step 15:
2770 divided by 313 is 8 with a remainder of 266.
The next digit of our result is 8. 
Result so far: 135815.5175718
The remainder is 266 after subtracting 2504 from 2770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Advancing to step 16:
2660 divided by 313 is 8 with a remainder of 156.
The number 8 becomes the next digit in our result. 
Result so far: 135815.51757188
If we take 2504 away from 2660, we end up with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

In conclusion, the division gives 135815.51757188 with a balance of 1.56e-07.