39145423 ÷ 915 
Our goal is to divide 39145423 by 915.

Moving on to step 1:
915 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 915

Advancing to step 2:
When dividing 39 by 915, we get 0 with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Include the next digit (1) from the dividend after 39, then repeat: 391 / 915

Step 3:
If we divide 391 by 915, we get 0 and a remainder of 391.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 391 to get 391.
Include the next digit (4) from the dividend after 391, then repeat: 3914 / 915

On to step 4:
When dividing 3914 by 915, we get 4 with a remainder of 254.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 3660 away from 3914, we end up with 254.
Bring next digit (5) of the dividend behind the 254 and repeat the process: 2545 / 915

Going ahead to step 5:
2545 divided by 915 is 2 with a remainder of 715.
Put 2 as the next digit of the answer. 
Result so far: 42.0
Subtracting 1830 from 2545 leaves us with 715.
Grab the next digit (4) from the dividend, add it to 715, then carry on: 7154 / 915

Let's proceed to step 6:
7154 divided by 915 is 7 with a remainder of 749.
Record the quotient 7 as the next digit in the result. 
Result so far: 427.0
The remainder is 749 after subtracting 6405 from 7154.
Include the next digit (2) from the dividend after 749, then repeat: 7492 / 915

Advancing to step 7:
915 can be fit into 7492 8 times, resulting in a remainder of 172.
Write down 8 as next digit of the result. 
Result so far: 4278.0
Subtract 7320 from 7492 to get 172.
Append the next digit (3) from the dividend to 172 and continue with: 1723 / 915

Let's proceed to step 8:
1723 divided by 915 is 1 with a remainder of 808.
Write down 1 as next digit of the result. 
Result so far: 42781.0
Deduct 915 from 1723 and we're left with 808.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8080, and continue the process.

Let's proceed to step 9:
915 goes into 8080 8 times with a remainder of 760.
Put 8 as the next digit of the answer. 
Result so far: 42781.8
If we subtract 7320 from 8080, we get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Moving on to step 10:
7600 divided by 915 is 8 with a remainder of 280.
Record the quotient 8 as the next digit in the result. 
Result so far: 42781.88
Subtracting 7320 from 7600 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

After the division, we end up with 42781.88 and a remainder of 0.28.