42923942 ÷ 86 
We're looking to find how many times 86 goes into 42923942.

Let's proceed to step 1:
When dividing 4 by 86, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 86

Advancing to step 2:
86 goes into 42 0 times with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Take the next digit (9) from the dividend and append it to 42, then repeat: 429 / 86

Let's proceed to step 3:
86 goes into 429 4 times with a remainder of 85.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 344 from 429 to get 85.
Append the next digit (2) from the dividend to 85 and continue with: 852 / 86

Step 4:
If we divide 852 by 86, we get 9 and a remainder of 78.
Write down 9 as next digit of the result. 
Result so far: 49.0
The remainder is 78 after subtracting 774 from 852.
Bring next digit (3) of the dividend behind the 78 and repeat the process: 783 / 86

Step 5:
If we divide 783 by 86, we get 9 and a remainder of 9.
The next digit of our result is 9. 
Result so far: 499.0
Deduct 774 from 783 and we're left with 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 86

Let's proceed to step 6:
86 goes into 99 1 times with a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 4991.0
If we take 86 away from 99, we end up with 13.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 86

On to step 7:
When dividing 134 by 86, we get 1 with a remainder of 48.
Write down 1 as next digit of the result. 
Result so far: 49911.0
Subtracting 86 from 134 leaves us with 48.
Take the next digit (2) from the dividend and append it to 48, then repeat: 482 / 86

Going ahead to step 8:
86 goes into 482 5 times with a remainder of 52.
The number 5 becomes the next digit in our result. 
Result so far: 499115.0
The remainder is 52 after subtracting 430 from 482.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 9:
86 can be fit into 520 6 times, resulting in a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 499115.6
If we take 516 away from 520, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 10:
If we divide 40 by 86, we get 0 and a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 499115.6
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
The number 86 fits into 400 4 times, leaving a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 499115.604
Subtract 344 from 400 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 12:
The number 86 fits into 560 6 times, leaving a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 499115.6046
If we subtract 516 from 560, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 13:
The number 86 fits into 440 5 times, leaving a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 499115.60465
The remainder is 10 after subtracting 430 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 14:
100 divided by 86 is 1 with a remainder of 14.
The next digit of our result is 1. 
Result so far: 499115.604651
If we subtract 86 from 100, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 15:
140 divided by 86 is 1 with a remainder of 54.
The next digit of our result is 1. 
Result so far: 499115.6046511
If we take 86 away from 140, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

In conclusion, the division gives 499115.6046511 with a balance of 5.4e-07.